92 Library. [May, 



the crystal to be examined is then interposed. In certain positions the 

 crystal biightens the dark field. 



Crystals belonging to the Tetragonal, Hexagonal, Rhombic, Mono- 

 clinic and Triclinic systems were found to polarise the Electric Ray. 



The effect produced by the following crystals were especially 

 marked: — Beryl, Apatite, Brucite, Barite, Microcline. 



A detailed account of the apparatus used and the results obtained 

 will be published in the Journal. 



The paper will be published, in full, in the Journal^ Part II. 



3. Materials for a Carcinological Fauna of India, No. I. The 

 Brachijura Oxyrhyncha. — By A. Alcock, M. B,, C. M. Z. S., Superintend 

 dent of the Indian Museum. 



The paper will be published in the Journal, Part II. 



Library. 



The following additions have been made to the Library since the 

 Meeting held in April last : — 



Transactions, Pf\oceedings, and Joui\nals, 



presented hy the respective Societies and Editors. 



Baltimore. Johns Hopkins University, — Circulars, Vol. XIV, No. 117. 

 Batavia. Bataviaasch Genootschap van Kunsten en Wetenschappen, — 



Notulen, Deel XXXII, Nr. 4. 

 . . Tijdschrift voorlndische Taal-, Land-en Volkenkunde, 



Deel XXXVIII, Nr. 4. 

 Berlin. Der Gesellschaft Naturforschender Freunde zu Berlin, — 



Sitzungs-berichte, Jahrgang, 1894. 

 Bombay. The Indian Antiquary,— Vol. XXIV, Part 298. 

 Bordeaux. Societe Linneenne de Bordeaux — Catalogue de la Biblio- 



th^que. Fascicule 1 . 

 Calcutta. Geological Survey of India, — Records, Vol. XXVIII, Part 1. 



■ Indian Engineering, — Vol. XVII, Nos. 14-17; and Index to 

 Vol. XVI. 



. . Maha-bodhi Society, — Journal, Vol. Ill, No. 12. 



■ The Medical Reporter — Vol. V, Nos. 7 and 8. 



—— — . Microscopical Society of Calcutta, — Bulletin. Vol. IV, 



Nos. 2-4. 



— . Photographic Society of India, — Journal, Vol. VIII, No. 4. 



