1. Passive Attitude Control of Flexible Spacecraft from Quaternion Measurements
   Di Gennaro S.
   Journal of Optimization Theory and Applications, January 2003, vol. 116, no. 1, pp. 41-60(20), Ingenta.  
2. GPS-based attitude determination of gyrostat satellite by quaternion estimation algorithms
   Kuang J.; Tan S.
   Acta Astronautica, November 2002, vol. 51, no. 11, pp. 743-759(17), Ingenta.  
3. Pressure Transmitter Surveillance Using Quaternion Numbers
   Chicharro J.M.; García-Berrocal A.; Balbás M.; Bla´Zquez J.
   Mechanical Systems and Signal Processing, November 2002, vol. 16, no. 6, pp. 1083-1091(9), Ingenta.  
4. Fast Quaternion Attitude Estimation from Two Vector Measurements
   Markley F.L.
   Journal of Guidance, Control, and Dynamics, 1 March 2002, vol. 25, no. 2, pp. 411-414(4), Ingenta.  
5. An Analog of the Poincaré Model for a Quaternion Hyperbolic Space
   Volchkov V.V.
   Ukrainian Mathematical Journal, October 2001, vol. 53, no. 10, pp. 1618-1625(8), Ingenta.  
6. Quaternion-Based Adaptive Attitude Tracking Controller Without Velocity Measurements
   Costic B. T.; Dawson D. M.; de Queiroz M. S.; Kapila V.
   Journal of Guidance, Control, and Dynamics, 1 November 2001, vol. 24, no. 6, pp. 1214-1222(9), Ingenta.  
7. Computing the zeros of quaternion polynomials
   Serodio R.; Pereira E.; Vitoria J.
   Computers and Mathematics with Applications, October 2001, vol. 42, no. 8, pp. 1229-1237(9), Ingenta.  
8. Consimilarity of quaternion matrices and complex matrices
   Liping H.
   Linear Algebra and its Applications, 1 July 2001, vol. 331, no. 1, pp. 21-30(10), Ingenta.  
9. Angular-Rate Estimation Using Delayed Quaternion Measurements
   Azor R.; Bar-Itzhack I. Y.; Deutschmann J. K.; Harman R. R.
   Journal of Guidance, Control, and Dynamics, 1 May 2001, vol. 24, no. 3, pp. 436-443(8)), Ingenta.  
10. Zeros of Quaternion Polynomials
    Serodio R.; Siu L.-S.
    Applied Mathematics Letters, February 2001, vol. 14, no. 2, pp. 237-239(3)), Ingenta.  
11. New Method for Extracting the Quaternion from a Rotation Matrix
    Bar-Itzhack I. Y.
    Journal of Guidance, Control, and Dynamics, 1 November 2000, vol. 23, no. 6, pp. 1085-1087(3)), Ingenta.  
12. Unit quaternion integral curve: A new type of fair free-form curves
    Miura K.T.
    Computer Aided Geometric Design, January 1999, vol. 17, no. 1, pp. 39-58(20)), Ingenta.  
13. Generalisation of the Mandelbrot set to integral functions of quaternions.
    Gomatam, Jagannathan; McFarlane, Isobel
    Discrete Contin. Dynam. Systems 5 (1999), no. 1, 107--116, MathSciNet.  
14. Stable norms on complex numbers and quaternions.
    Arens, Richard; Goldberg, Moshe; Luxemburg, W. A. J.
    J. Algebra 219 (1999), no. 1, 1--15, MathSciNet.  
15. Littlewood's algorithm and quaternion matrices
    Merino D.I.; Sergeichuk V.V.
    Linear Algebra and its Applications, 1 September 1999, vol. 298, no. 1, pp. 193-208(16)), Ingenta.  
16. Quaternion matrix and the Re-nonnegative definite solutions to the quaternion matrix inverse problem AX=B.
    Xiantao, Wang
    Math. J. Okayama Univ. 39 (1997), 61--69 (1999), MathSciNet.  
17. A Characterization of Quaternion Planes, Revisited
    Stroppel M.
    Geometriae Dedicata, September 1998, vol. 72, no. 2, pp. 179-187(9)), Ingenta.  
18. Integration of the equations of a rotational motion of a rigid body in quaternion algebra. The Euler case
    Niwa Y.; Yamamoto T.; Kawakami H.; Kitazawa Y.; Kosenko I.I.
    Journal of Applied Mathematics and Mechanics, 1998, vol. 62, no. 2, pp. 193-200(8), Ingenta.  
19. Quaternions and Cayley numbers. Algebra and applications.
    Ward, J. P.
    Mathematics and its Applications, 403. Kluwer Academic Publishers Group, Dordrecht, 1997. xii+237 pp. ISBN: 0-7923-4513-4, MathSciNet.
20. Quaternions and matrices of quaternions.
    Zhang, Fuzhen
    Linear Algebra Appl. 251 (1997), 21--57, MathSciNet.  
21. Iteration of Quaternion Functions  
    Stephen Bedding; Keith Briggs  
    American Mathematical Monthly, Vol. 103, No. 8. (Oct., 1996), pp. 654-664, Jstor.  
22. A quaternion solution to the pose determination problem for rendezvous and docking simulations
    Mukundan R.; Ramakrishnan K.R.
    Mathematics and Computers in Simulation, 8 November 1995, vol. 39, no. 1, pp. 143-153(11), Ingenta.  
23. Singular invariant hyperfunctions on the spaces of symmetric matrices, and, of complex and quaternion Hermitian matrices.
    Muro, Masakazu
    Representation theory of groups and analysis on homogeneous spaces (Japanese) (Kyoto, 1995). Surikaisekikenkyusho Kokyuroku No. 929 (1995), 19--40, MathSciNet.
24. Explanation in the historiography of mathematics: the case of Hamilton's quaternions.
    Koetsier, Teun
    Stud. Hist. Philos. Sci. 26 (1995), no. 4, 593--616, MathSciNet.  
25. On numerical range of normal matrices of quaternions.
    Zhang, Fuzhen
    J. Math. Phys. Sci. 29 (1995), no. 6, 235--251, MathSciNet.  
26. Interpolating solid orientations with circular blending quaternion curves
    Kim M.-S.; Nam K.-W.
    Computer-Aided Design, May 1995, vol. 27, no. 5, pp. 385-398(14), Ingenta.  
27. Fractals, chaos and quaternions.
    Doyle, John F.; Steves, Bonnie; Gomatam, Jagannathan
    From Newton to chaos (Cortina d'Ampezzo, 1993), 417--422, NATO Adv. Sci. Inst. Ser. B Phys., 336, Plenum, New York, 1995, MathSciNet.  
28. The numerical range of normal matrices with quaternion entries.
    So, Wasin; Thompson, Robert C.; Zhang, Fu Zhen
    Special Issue: The numerical range and numerical radius. Linear and Multilinear Algebra 37 (1994), no. 1-3, 175--195, MathSciNet.  
29. Generalization of the de Moîvre formulas for quaternions and octonions.
    Leite, F. Silva; Vitória, José
    Mathematical studies in honor of Professor Luís de Albuquerque (Portuguese), 121--133, Univ. Coimbra, Coimbra, 1994, MathSciNet.  
30. Division algebras: octonions, quaternions, complex numbers and the algebraic design of physics.
    Dixon, Geoffrey M.
    Mathematics and its Applications, 290. Kluwer Academic Publishers Group, Dordrecht, 1994. x+236 pp. ISBN: 0-7923-2890-6, MathSciNet.  
31. Quaternions and the heuristic role of mathematical structures in physics.
    Anderson, Ronald; Joshi, Girish C.
    Phys. Essays 6 (1993), no. 2, 308--319, MathSciNet.  
32. The quaternion formalism for Möbius groups in four or fewer dimensions.
    Wilker, J. B.
    Linear Algebra Appl. 190 (1993), 99--136, MathSciNet
33. Quaternion solutions of four-dimensional Liouville and sine-Gordon equations.
    Chung, Won-Sang; Lee, Jungjai; Cho, Jin-Ho
    Modern Phys. Lett. A 7 (1992), no. 27, 2527--2533, MathSciNet.
34. A quaternion representation of the Lorentz group for classical physical applications
    Abonyi I.; Bito J.F.; Tar J.K.
    Journal of Physics A: Mathematical and General, 1991, vol. 24, no. 14, pp. 3245-3254(10), Ingenta.  
35. Application of the quaternion method to a generalization of the Kolosov-Muskhelishvili method to three-dimensional problems of elasticity theory. (Russian)
    Pimenov, A. A.; Pushkarev, V. I.
    Prikl. Mat. Mekh. 55 (1991), no. 3, 422--427; translation in J. Appl. Math. Mech. 55 (1991), no. 3, 343--347 (1992), MathSciNet.  
36. Arithmetic of quaternions and Eisenstein series. (Russian)
    Gritsenko, V. A.
    Zap. Nauchn. Sem. Leningrad. Otdel. Mat. Inst. Steklov. (LOMI) 160 (1987), Anal. Teor. Chisel i Teor. Funktsii. 8, 82--90, 298; translation in J. Soviet Math. 52 (1990), no. 3, 3056--3063, MathSciNet.  
37. The origin of quaternions. (Spanish)
    Rosales Góngora, Antono
    Epsilon No. 13 (1989), 43--50, MathSciNet.  
38. Hamilton, Rodrigues, and the Quaternion Scandal  
    Simon L. Altmann  
    Mathematics Magazine, Vol. 62, No. 5. (Dec., 1989), pp. 291-308, Jstor.  
39. A Quick Introduction to Quaternions  
    McAllister, Byron L.  
    Pi Mu Epsilon J., (1989), V. 9, No. 1, pp. 23-25.  
40. Classes of quaternion algebras in the Brauer group. Quadratic forms and real algebraic geometry (Corvallis, OR, 1986).
    Miná\v c, Ján
    Rocky Mountain J. Math. 19 (1989), no. 3, 819--831, MathSciNet.  
41. Doubling: Real, Complex, Quaternion, and beyond... Well, Maybe (in Classroom Capsules)  
    Robert C. Moore  
    The College Mathematics Journal, Vol. 17, No. 4. (Sep., 1986), pp. 342-343, Jstor.  
42. Some norm conditions for a Banach algebra to be either the reals, complexes or quaternions.
    Okada, Nolio
    TRU Math. 19 (1983), no. 1, 67--74, MathSciNet.  
43. Vector Identities from Quaternions (in Classroom Capsules)  
    William C. Schulz  
    The Two-Year College Mathematics Journal, Vol. 12, No. 4. (Sep., 1981), pp. 271-273, Jstor.  
44. Equivalence of an Identity in Vector Analysis to Quaternion Associativity, and Ramifications (in Classroom Notes)  
    Andrew Sobczyk  
    American Mathematical Monthly, Vol. 88, No. 6. (Jun. - Jul., 1981), pp. 441-443, Jstor.  
45. A Rational Polynomial whose Group is the Quaternions (in Mathematical Notes)  
    Richard A. Dean  
    American Mathematical Monthly, Vol. 88, No. 1. (Jan., 1981), pp. 42-45, Jstor.  
46. Solution of the Dirac equation in quaternions. (Russian)
    Berezin, A. V.; Tolkachev, E. A.; Fedorov, F. I.
    Izv. Vyssh. Uchebn. Zaved. Fiz. 1981, no. 10, 43--46, MathSciNet.  
47. Extension and reduction of the range in modular quaternion arithmetic. (Russian)
    Turmuhambetov, R. N.
    Theory of coding and complexity of calculations (Russian), pp. 195--207, 224, "Nauka" Kazakh. SSR, Alma-Ata, 1980, MathSciNet.  
48. The Lorentz transformations and the equations for spinorial quaternions. (Russian)
    Berezin, A. V.; Tolkacev, E. A.; Fedorov, F. I.
    Dokl. Akad. Nauk BSSR 24 (1980), no. 4, 308--310, 380, MathSciNet.  
49. Quaternion factorization of the Klein-Fok operator. (Russian)
    Ermolaev, E. A.
    Vestsi Akad. Navuk BSSR Ser. Fi z.-Mat. Navuk 1979, no. 1, 75--78, 141, MathSciNet.  
50. Quaternion quantum mechanics as the description of tachyons and quarks.
    Soucek, J.
    Symposium on Mathematical Models in the Theory of Elementary Particles (Liblice, 1978), II. Czechoslovak J. Phys. B 29 (1979), no. 3, 315--318, MathSciNet.  
51. Pseudo-quaternion and pseudo-octonion algebras.
    Okubo, Susumu
    Hadronic J. 1 (1978), no. 4, 1250--1278, MathSciNet.  
52. Real subspaces of a quaternion vector space.
    Dlab, Vlastimil; Ringel, Claus Michael
    Canad. J. Math. 30 (1978), no. 6, 1228--1242, MathSciNet.  
53. Complex quaternions and spinor representations of de Sitter groups SO(4,1) and SO(3,2).
    Mir-Kasimov, R. M.; Volobujev, I. P.
    Acta Phys. Polon. B 9 (1978), no. 2, 91--105, MathSciNet.  
54. Special methods of prescribing a complete residue system in the ring of quaternions. (Russian)
    Turmuhambetov, R. N.
    Theoretical and applied problems in mathematics and mechanics (Russian), pp. 290--291, 317, "Nauka" Kazakh. SSR, Alma-Ata, 1977, MathSciNet.  
55. Hamilton's Discovery of Quaternions  
    B. L. van der Waerden  
    Mathematics Magazine, Vol. 49, No. 5. (Nov., 1976), pp. 227-234, Jstor.  
56. Existence of a quaternion matrix with prescribed eigenvalues and diagonal elements of special form. (Russian)
    Bredihin, B. S.
    Izv. Voronezh. Gos. Ped. Inst. 189 (1976), 50--51, MathSciNet.  
57. Hamilton's discovery of quaternions.
    van der Waerden, B. L.
    Translated from the German by F. V. Pohle. Math. Mag. 49 (1976), no. 5, 227--234, MathSciNet.  
58. Are quaternions any use?
    Abrahamson, B.
    Math. Colloq. Univ. Cape Town 10 (1975/76), 114--127, MathSciNet.  
59. Second quantized quaternion quantum theory.
    Edmonds, James D., Jr.
    Found. Phys. 5 (1975), no. 4, 643--648, MathSciNet.  
60. A model of hyperbolic stereometry based on the algebra of quaternions.
    Szybiak, A.
    Colloq. Math. 32 (1975), no. 2, 277--284, MathSciNet.  
61. On Analytic Function of a Quaternion Variable  
    Buoncristiana, A. M.  
    Pi Mu Epsilon J., (1974), V. 6, No. 1, pp. 8-11.  
62. The Quaternion Calculus  
    C. A. Deavours  
    American Mathematical Monthly, Vol. 80, No. 9. (Nov., 1973), pp. 995-1008, Jstor.  
63. Numerical calculation of quaternion functions. IV.
    Hoshi, Seiichi
    Mem. Fac. Engrg. Miyazaki Univ. No. 7 (1973), 1--34, MathSciNet.  
64. A classification of the lines n-dimensional real-complex affine space over the sfield of quaternions. (Russian)
    Moscennikova, G. A.
    Questions of differential and non-Euclidean geometry (Russian), pp. 146--168. Moskov. Gos. Ped. Inst., Moscow, 1972 (1973), MathSciNet.  
65. On the definitions of complex numbers and quaternions.
    Ravaska, Timo
    Nordisk Mat. Tidskr. 19 (1971), 134--136, 155, MathSciNet.  
66. Reducible locally nilpotent matrix groups over sfield of real quaternions. (Russian)
    Zagorin, L. E.
    Vesci Akad. Navuk BSSR Ser. Fi z.-Mat. Navuk 1969 no. 2, 115--117, MathSciNet.  
67. The Quaternion Group in Plane Geometry  
    K. Sitaram  
    Proceedings of the American Mathematical Society, Vol. 19, No. 4. (Aug., 1968), pp. 857-858, Jstor.  
68. The Involutory Antiautomorphisms of the Quaternion Algebra (in Mathematical Notes)  
    Rabe Von Randow  
    American Mathematical Monthly, Vol. 74, No. 6. (Jun. - Jul., 1967), pp. 699-700, Jstor.  
69. From the universal arithmetic of Newton to the quaternion algebra of Hamilton. (Russian)
    Kramar, F. D.
    Istor.-Mat. Issled. No. 17 1966 309--316, MathSciNet.  
70. Semi-quaternion symplectic straight line. (Russian)
    Luscickaja, I. G.;  Sestyreva, L. V.
    Taskent. Gos. Univ. Nau\v cn. Trudy Vyp. 276 1966 62--70, MathSciNet.  
71. An integral theorem for analytic intrinsic functions on quaternions.
    Cullen, C. G.
    Duke Math. J. 32 1965 139--148, MathSciNet.  
72. Another proof of the theorems on the eigenvalues of a square quaternion matrix.
    Au-yeung, Yik-hoi
    Proc. Glasgow Math. Assoc. 6 1964 191--195 (1964), MathSciNet.  
73. The Geometric Theory of Quaternions  
    W. F. Eberlein  
    American Mathematical Monthly, Vol. 70, No. 9. (Nov., 1963), pp. 952-954, Jstor.  
74. Complex Fibonacci Numbers and Fibonacci Quaternions (in Mathematical Notes)  
    A. F. Horadam  
    American Mathematical Monthly, Vol. 70, No. 3. (Mar., 1963), pp. 289-291, Jstor.  
75. Analytic primary functions on quaternions.
    Cullen, C. G.
    Mem. School Sci. Engrg. Waseda Univ. Tokyo No. 27 1963 103--106, MathSciNet.  
76. Foundations of quaternion quantum mechanics.
    Finkelstein, David; Jauch, Josef M.; Schiminovich, Samuel; Speiser, David
    J. Mathematical Phys. 3 1962 207--220, MathSciNet.  
77. Some theorems on matrices with real quaternion elements.
    Wiegmann, N. A.
    Canad. J. Math. 7, (1955). 191--201, MathSciNet.  
78. A Matric Proof of the Fundamental Theorem of Algebra for Real Quaternions (in Mathematical Notes)  
    Mark Leum; M. F. Smiley  
    American Mathematical Monthly, Vol. 60, No. 2. (Feb., 1953), pp. 99-100, Jstor.  
79. Quaternions and Hadamard Matrices  
    W. A. Rutledge  
    Proceedings of the American Mathematical Society, Vol. 3, No. 4. (Aug., 1952), pp. 625-630, Jstor.  
80. An Elementary Note on Powers of Quaternions  
    H. E. Salzer  
    American Mathematical Monthly, Vol. 59, No. 5. (May, 1952), pp. 298-300, Jstor.  
81. An elementary note on powers of quaternions.
    Salzer, H. E.
    Amer. Math. Monthly 59, (1952). 298--300, MathSciNet.  
82. The Use of Quaternions in Wave-Tensor Calculus  
    C. W. Kilmister  
    Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, Vol. 199, No. 1059. (Dec. 7, 1949), pp. 517-532, Jstor.  
83. Eigenvalues and canonical forms of matrices with quaternion coefficients.
    Lee, H. C.
    Proc. Roy. Irish Acad. Sect. A. 52, (1949). 253--260, MathSciNet.  
84. Onderzoekingen betreffende de Meetkundige Grondslagen van de Projectieve Quaternionenmeetkunde. (Dutch)
    Bilo, Julien
    [Investigations on the Geometrical Foundations of Projective Quaternion Geometry] A. Vanderlinden, Brussel,] 1949. 123 pp., MathSciNet.  
85. Stereographic projection and the linear fractional group of transformations of quaternions.
    Gormley, P. G.
    Proc. Roy. Irish Acad. Sect. A. 51, (1947). 67--85, MathSciNet.  
86. Quaternions and Reflections (Postscript) (in Discussions and Notes)  
    H. S. M. Coxeter  
    American Mathematical Monthly, Vol. 53, No. 10. (Dec., 1946), p. 588, Jstor.  
87. Quaternions and Reflections  
    H. S. M. Coxeter  
    American Mathematical Monthly, Vol. 53, No. 3. (Mar., 1946), pp. 136-146, Jstor.  
88. An elementary presentation of the theory of quaternions.
    Murnaghan, F. D.
    Scripta Math. 10, (1944). 37--49, MathSciNet.  
89. The Roots of a Quaternion  
    Louis Brand  
    American Mathematical Monthly, Vol. 49, No. 8. (Oct., 1942), pp. 519-520, Jstor.  
90. Quaternions and Sums of Three Squares  
    Gordon Pall  
    American Journal of Mathematics, Vol. 64, No. 1/4. (1942), pp. 503-513, Jstor.  
91. The Roots of a Quaternion  
    Ivan Niven  
    American Mathematical Monthly, Vol. 49, No. 6. (Jun. - Jul., 1942), pp. 386-388, Jstor.  
92. The roots of a quaternion.
    Brand, Louis
    Amer. Math. Monthly 49, (1942), MathSciNet.  
93. Equations in Quaternions  
    Ivan Niven  
    American Mathematical Monthly, Vol. 48, No. 10. (Dec., 1941), pp. 654-661, Jstor.  
94. On some applications of quaternions to restricted relativity and classical radiation theory.
    Weiss, P.
    Proc. Roy. Irish Acad. Sect. A. 46, (1941). 129--168, MathSciNet.  
95. On the Arithmetic of Quaternions  
    Gordon Pall  
    Transactions of the American Mathematical Society, Vol. 47, No. 3. (May, 1940), pp. 487-500, Jstor.  
96. Quaternion Treatment of the Relativistic Wave Equation  
    A. W. Conway  
    Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, Vol. 162, No. 909. (Sep. 15, 1937), pp. 145-154, Jstor.  
97. Doubly Divisible Quaternions  
    Horace L. Olson  
    The Annals of Mathematics, 2nd Ser., Vol. 31, No. 3. (Jul., 1930), pp. 371-374, Jstor.  
98. Arithmetics of Generalized Quaternion Algebras  
    Claiborne G. Latimer  
    American Journal of Mathematics, Vol. 48, No. 1. (Jan., 1926), pp. 57-66, Jstor.  
99. Quaternion Developments with Applications  
    James Byrnie Shaw  
    Transactions of the American Mathematical Society, Vol. 13, No. 3. (Jul., 1912), pp. 279-292, Jstor.  
100. A Matrix Defined by the Quaternion Group  
     L. E. Dickson  
     American Mathematical Monthly, Vol. 9, No. 11. (Nov., 1902), pp. 243-248, Jstor.  
101. Errata: A Matrix Defined by the Quaternion Group  
     American Mathematical Monthly, Vol. 9, No. 11. (Nov., 1902), p. 276, Jstor.  
102. Quaternions and Projective Geometry  
     Charles Jasper Joly  
     Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character, Vol. 201. (1903), pp. 223-327, Jstor.  
103. Quaternion Space  
     Arthur S. Hathaway  
     Transactions of the American Mathematical Society, Vol. 3, No. 1. (Jan., 1902), pp. 46-59, Jstor.  
104. The Linear Vector Operator of Quaternions  
     James Byrnie Shaw  
     American Journal of Mathematics, Vol. 19, No. 3. (Jul., 1897), pp. 267-282, Jstor.  
105. Application of Quaternions to Projective Geometry  
     C. H. Chapman  
     American Journal of Mathematics, Vol. 14, No. 2. (Apr., 1892), pp. 115-140, Jstor.  
106. Plane Trigonometry by Quaternions  
     De Volson Wood  
     The Analyst, Vol. 9, No. 1. (Jan., 1882), pp. 19-21, Jstor.  
107. The Quaternion Formulae for Quantification of Curves, Surfaces and Solids, and for Barycentres  
     W. I. Stringham  
     American Journal of Mathematics, Vol. 2, No. 3. (Sep., 1879), pp. 205-210, Jstor.  
108. Mechanics by Quaternions  
     E. W. Hyde  
     The Analyst, Vol. 8, No. 2. (Mar., 1881), pp. 49-55, Jstor.  
109. Mechanics by Quaternions  
     E. W. Hyde  
     The Analyst, Vol. 7, No. 5. (Sep., 1880), pp. 137-144, Jstor.  
110. Quaternions  
     De Volson Wood  
     The Analyst, Vol. 7, No. 1. (Jan., 1880), pp. 11-13, Jstor.  
111. Origin of the Name "Quaternions"  
     W. W. Johnson  
     The Analyst, Vol. 7, No. 2. (Mar., 1880), p. 52, Jstor.   
112. A Certain Class of Cubic Surfaces Treated by Quaternions  
     A. B. Chace  
     American Journal of Mathematics, Vol. 2, No. 4. (Dec., 1879), pp. 315-323, Jstor.  
113. Quaternions  
     Christine Ladd  
     The Analyst, Vol. 4, No. 6. (Nov., 1877), pp. 172-174, Jstor.  

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