92 Library. [May, 
the crystal to be examined is then interposed. In certain positions the 
crystal brightens 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 Garcinological Fauna of India, No. 1. The 
Brachyura Oxyrhyncha.—By A. Alcock, M. B., C. M. Z. S., Superinten¬ 
dent of the Indian Museum. 
The paper will be published in the Journal , Part II. 
J_I BRARY. 
The following additions have been made to the Library since the 
Meeting held in April last:— 
Transactions, Tboceedings, and jIoui\nals, 
presented by the respective Societies and Editors. 
Baltimore. Johns Hopkins University,—Circulars, Vol. XIY, Ho. 117. 
Batavia. Bataviaasch Genootsehap van Kunsten en Wetenschappen,— 
Hotulen, Deel XXXII, Hr. 4. 
-. -. Tijdschrift voor Indische Taal-, Land-en Volkenkunde, 
Deel XXXVIII, Hr. 4. 
Berlin. Der Gesellschaft Haturforschender 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, Hos. 14-17; and Index to 
Vol. XVI. 
-. Maha-bodhi Society, — Journal, Vol. Ill, Ho. 12. 
-■ - ». The Medical Reporter — Vol. V, Hos. 7 and 8. 
——. Microscopical Society of Calcutta, — Bulletin. Vol. IV, 
Hos. 2-4. 
-. Photographic Society of India, — Journal, Vol. VIII, No. 4. 
