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ol amid 
Additions to the Library. 279 
-incomplete diaphragm. The thickened outer region increased by suc- 
cessive layers, which slope down into the apertures, and are traversed 
by numerous minute canals. opening into the vestibuies and visceral 
cavities of the cells. These appear to communicate with a vertical 
series of tubuli, which are placed between, and mark the line of division 
between adjoining tubes. The interstitial tubes are abruptly developed 
: from the upper wali of the prostrate portion of the zocwcia, and are 
crossed by two, rarely three horizontal diaphragms. 
Formation and locality: Kaskaskia group. I found the types at 
Tateville, Ky., on the line of the Cincinnati Southern R.R. 
[TO BE CONTINUED. | 
PMP ILION Ss: LO THE LIBRARY, 
: During the Year Ending December 26th, 1883. 
BY DONATION. 
American Academy of Sciences, Boston—Proceedings, New Series. Vols. i., ii., ili., 
iv. 
American Journal of Science, New Haven. Two numbers of Journal, July, 1876, and 
November, 1877. 
Boston Zoological Society—Quarterly Journal. Vol. ii., Nos. 2, 3, 4, 
Brooklyn Library, New York—Bulletin of New Books, Sept., 1882, to March, 1883. 
Bureau of Education, Washington, D.C.— 
High Schools for Girls in Sweden. 
Maternal Schools in France. 
Technical Instruction in France. 
Circular of Information, No. 4. 
Circular of Information, No. 1, 1883. 
Planting Trees in School Grounds. 
Answers to Inquiries. 
Co-Edueation of Sexes in the United States. 
Report of Comniissioner for 1881. 
Canadian Bureau of Agriculture—Report of Fruit Growers’ Association of Ontario, 
Chicago Acad. Sciences, Chicago— 
Catalogue of Florida Shells. = 
Historical Sketch of Academy. 
President’s Address, 1878. 
Stimpson’s Notes on N. Am. Crustacea, Pt. 3. 
Chief Signal Officer, U. S. A., Washington, D.C.— 
Annual Report for 1880. 
Annual Report for 1872. 
Report for 1883. 
Memoir on Use of Homing Pigeons. 
