i»\jBXiic-A-a:i03srs oy the 



JOHNS HOPKINS UNIVERSITY. 



BALTIMORE. 



I. American Journal of Mathematics. 8. Newcomh, Editor, and T. Craig, 



a- Editor. Quarterly, ito. Volume XII in progress. $5 per 



unc. 



II. American Chemical Journal. — I. Bkmsin, Editor. 8 Nos. yearly. 8vo. 



Volume XI in progress. $4 per volume. 



III. American Journal of Philology. — B. L. Uh.dersleeve, Editor. Quar- 



terly. Bvo. Volume X in progress. $3 per volume. 



IV. Studies from the Biological Laboratory. — Including the Chesapeake 



jrical Laboratory. H. X. Martin, Editor, and W. K. Brooks, Asso- 

 ciate Editor. 8vo. Volume TV in progr< - per volume. 



V. Studies in Historical and Political Science. — H, B. Adams. Editor. 



Monthly Volume VII in progress. $3 per volume. 



VI. Johns Hopkins University Circulars. — Containing reports of scientific 



and literary work in progress in Baltimore. 4to. Vol. IX in progress, 

 ear. 

 VH. Annual Report.— Presented by the President to the Board of Trustees, 



reviewing the operations of the University during the past academic year. 

 VH. Annual Register. — Giving the list of officers and students, and stating 



the regulations, etc., of the University. Published at the close of the Aca- 



Rowlaxi* < Photograph of the Normal Solar Spectrum. New edition now 



reao for set of teu plates, mounted. 



Observations on the Embryology of Insects and Arachnids. By Adam 



liruce. -It; pp. and 7 plates. S3.0<», cloth. 

 Selected Morphological Monographs. W. K. Brooks, FMitor. Vol. I. 370 



pp. and .">1 plates. -Ito. $7.50, cloth. 

 The Development and Propagation of the Oyster in Maryland By "W. 

 K. Brook*. lO.-tpp. 4to; 13 plates and 3 maps. $5.00, cloth. 

 hie Mechanical Equivalent of Heat. By H. A. Rowland. 127 pp. 



A full list of publications will be sent on application. 



Communications in respect to exchanges and remittances may be 

 sent to the Johns Hopkins University (Publication Agency), Baltimore, 

 Maryland. 



BEOK1EPL BROTHERS, 

 No. 6 Murray Street, New York, 



Manufacturers of Balances and Weights of Precision for Chem- 

 \ vers, Jewelers, Druggists, and in general for every use 

 where accuracy is required. 



FOSSILS. 



Large collections for schools and individuals. The Cre- 

 taceous and Tertiary (vertebrate and invertebrate) Fossils 

 of the various groups of Dakota. Nebraska, and Wyoming 

 described by Professors Meek. Leidy, Marsh and Cope 

 Also Dakota group of Fossil Leaves of Lesquereux. Large stock of 

 Minerals and Indian Relics also. Send for Illustrated Price Catalogue 



L. W. STILWELL, 



3t. Deadwood. South Dakota. 



