Mr. R. Phillips on the Sulphates of Nickel 287 



Species. Icon. 



G. 66. H. Dams, Linn. . Ernst, I. PI. XXIX. f. 58. a. b. 



67. — Pa?nphilus 9 L\nn. Ernst, I. PI. XXIX. f. 56. a. b. 



68. — Lyllus, Esp.... Hiibn. Pap. Tab. 109. f.557. 558. 



(fern.) 



69 . — . Ipkl^ Fab. ... Hiibn. Pap. Tab. 53. f. 249. 



(mas.) 250. 251. (fcem.) 



70. — Hero, Linn.... Ernst, I. PI. XXIX. f. 59. a. b. 



71. — (Edipus,Fab.. Hiibn. Pap. Tab. 52. f. 245. 246. 



(mas.) 



72. — Arcania, Linn. Ernst, I. PL XXIX. f. 57. a — d. 



73. — Dorus, Esp.... Ernst, I. PL LXVIII. Suppl. 



XIV. f. 57. a. b. bis. 



74. — Satyrion, Esp. Hiibn. Pap. Tab. 53. f. 254. 255. 



(mas.) 



75. — Corinna, Hiibn. Hiibn. Pap. Tab. 105. f. 534. 537. 



(fcem.) 



76. — Leander, Fab. Hiibn. Pap. Tab.l03.f.526. 527. 



(fcem.) 



77. — Phryne, Fab. . Ernst, I. PL VIII. Suppl. III. 



f. 58. a. b. bis. 

 [To be continued.] 



L. On the Crystalline Forms and Composition of the Sulphates 

 of Nickel. By R. Phillips, F.R.S. $c. 



r T v HE Annates de Chimie et de Physique for May last, con- 

 * tains a memoir by Mons. E. Mitscherlich, " On the cry- 

 stalline forms and composition of some sulphates" : his state- 

 ments, with respect to sulphate of nickel, appear to require 

 some notice. 



In the present paper the author has given only one of the forms 

 of sulphate of nickel, stating that in a memoir which will shortly 

 appear he shall describe another. The primary form of the 

 crystal now under examination, Mons. M. considers as an acute 

 octahedron with a square base ; but it may be regarded, as 

 shown by Mr. Brooke in the Annals of Philosophy, vol. 6. N.S., 

 p. 4 37, as a square prism, parallel to the planes of which it may 

 be cleaved. The composition of sulphate of nickel M. Mitscher- 

 lich states to be: 



Sulphuric acid 28*51 



Oxide of nickel 26*71 



Water 44*78 



100-00 

 M. Mitscherlich then makes the following statement : "In an- 

 other 



