112 



Presents. 



[Dec. 7, 



anomalous cases that occurred to him consequent on the use of vessels not 

 chemically clean. 



Among the numerous writers on the subject of supersaturation, I know 

 of none that has noticed the formation of the second modified hydrate of 

 sodic sulphate except M. Viollette, who, in a " Memoire sur la Sursatura- 

 tion " contained in the ' Annales Scientifiques de l'Ecole Normale Superi- 

 eure" (tome troisieme anne'e, 1866), refers in about a dozen words, p. 223, 

 to the formation of another hydrate, " qui cristallise] difficilement en forme 

 de choux-fleurs." 



Presents received December 7, 1871. 



Transactions, 



Albany: — Albany Institute. Transactions. Yol. YI. 8vo. Albany 1870. 

 Proceedings. Yol. I. Parti. 8vo. Albany 1871. The Institute. 



Cambridge, Mass. : — Museum of Comparative Zoology at Harvard Col- 

 lege. Bulletin. Yol. II. No. 1-3. 8vo. Cambridge. Illustrated 

 Catalogue. No. 3. roy. 8vo. 1870. The Museum. 



Geneva : — Societe de Physique et d'Histoire Naturelle. Memoires. Tome 

 XXI. Partie 1. 4to. Geneve 1871. Table des Memoires contenus 

 dans les Tomes I. a XX. 4to. 1871. The Society. 



Lausanne : — Societe Yaudoise des Sciences Naturelles. Bulletin. Yol. 

 X. No. 63-65. 8vo. Lausanne 1870-71. The Society. 



Liverpool: — Literary and Philosophical Society. Proceedings. No. 23, 

 24. 8vo. London 1869-70. The Society. 



London : — Eoyal Astronomical Society. Memoirs. Vol. XXXIX. Part 1. 

 4to. 1871. General Index to the first thirty-eight volumes. 8vo. 

 1871. Observations of Comets from b.c. 611 to a.d. 1640, extracted 

 from the Chinese Annals ; translated, with Introductory Remarks, 

 by J. Williams.] 4to. 1871. Tables of Iris, by F. Briinnow. 4to. 

 Dublin 1869. The Society. 



Middlesbrough : — Iron and Steel Institute. Journal. Yol. II. (No. 3, 4.) 

 8vo. London 1871. The Institute. 



Milan : — Beale Istituto Lombardo di Scienze e Lettere. Memorie. Classe 

 di Scienze Mat. e Nat. Yol. XI. fasc. 3 ; Yol. XII. fasc. 1. Classe 

 di Lettere. Yol. XI. fasc. 3 ; Yol. XII. fasc. 1. 4to. 1870. Een- 

 diconti. Serie II. Yol. II. fasc. 17-20 ; Yol. III. fasc. 1-15. 8vo. 

 1869-70. Rapporti sui progressi delle Scienze. I. 8vo. 1870. 



The Institute. 



New Haven : — Connecticut Academy of Arts and Sciences. Trans- 

 actions. Yol. I. Part 2; Yol. II. Parti. 8vo. New Haven 1867-71. 



The Academy. 



Paris : — Ecole des Mines. Annales des Mines. Tome XYIII. 4-6 liv. de 

 1870; Tome XIX. l-2 1iv.de 1871. 8vo. Paris. 



The Ecole des Mines. 



