

I»\JBX0:O-A-TIO2SrS O^ THE 



JOHNS HOPKINS UNIVERSITY. 



BALTIMORE. 



I. American Journal of Mathematics. \m, Editor, and T. Ci 



juarterly. 4to. Volume XII in |6 per 



line. 



II. American Chemical Journal. — 1.1: Editor. 



Volume XI in pi per yolui 



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



Vohunc X in progress. %'A per volume. 



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



Zoological Laboratory. II. X. MARTIN, Editor, and W. K. 1' hooks, Asso- 

 ciate Editor. 8vo. Volume IV in progiv- 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 iu progress in Baltimore. 4to. Vol. IX in progress. 

 - 



VII. 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- 



Row Photograph of the Normal Solar Spectrum. New edition now 



read for set of ten plates, mounted. 



Observations on the Embryology of Insects and Arachnids. By Adam 



T. Bruce. 46 pp. and 7 plates. $3.00, cloth. 

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



pp. and 51 plates. 4to. $7.50, cloth. 

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



K. Brooks. 193 pp. 4 to; 13 plates and 3 maps. $5.00, cloth. 

 On the Mechanical Equivalent of Heat. By H. A. Rowland. 127 pp. 



8vo. $1.50. 



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. 



BECKETT BROTHERS, 

 No. 6 Murray Street, New York, 



Manufacturers of Balances and Weights of Precision for Chem- 

 ists, Assayers, Jewelers, Druggists, and in general for every use 

 where accuracy is required. 



FOSSILS. 



\^ ^^ Large collections for schools and individuals. The Cre- 



Bffi ,a^fr taceous and Tertiary (vertebrate and invertebrate) Fossils 



^^P^^^^ of the various groups of Dakota, * ebraska, and Wyoming 



mr as 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, 



3 1. Deadwood, South Dakota. 



