SCI F.NCE.- ADVERTISEMENTS. 



MICROSCOPES 



New Stiuieiils' ConipoiuKl Micrnscopes, with 

 full outfit for preparing speoiiueiis i^e.OO 



New Small Laboratory Microscopes, witii 

 full outlit for preparing specimens 9.00 



New Large Laboratory Microscope, with 

 full outfit for preparing specimens 18.00 



Full instructions for using the microscope 

 find mounting and preparing specimens with 

 eacn outfit. 



• WILLIAMS, BROWN <& EARLE, 



Dept. M, 918 Chestnut SU, Philadelphia, Pa. 



MARINE BIOLOGICAL LABORATORY 



Supply Department — 1. Zoology — Preserved Material 



of all types of animals for class worlc or for the muBeum. 

 3. Botany— Preserved Material of Algae, Fungi, Liver- 

 worts and Mosses. For price lists and all information ad- 

 dress GEO. M. GRAY, Curator Woods Holl, Mass. 



THE SCHOOL OF HEDICINE 

 AND DENTAL DEPARTMENT 



OF 



GEORGETOWN UNIVERSITY, 



in the City of Washington. 



students are required to devote their entire time to the 

 study of medicine. Evening classes have been abolished as 

 it was found impracticable to properly train men engaged 

 m other pursuits during the day. The fifty-fifth session 

 will begin September 29, 1904, and continue for eight 

 months. 



A large corps of teachers in proportion to the number 

 of students makes instruction more directly personal and 

 adapted to the special needs of the individual. The clinical 

 facilities of the University Hospital and other city and 

 government hospitals are ample, and the laboratories are all 

 well equipped. 



Special attention is invited to the educational advan- 

 tages of the National Capital, with its unrivalled libraries, 

 the Army Medical Museum, the Museum of Hygiene, and the 

 various scientific laboratories which are oi)en to students. 



A eitcular of information giving full details of requisites 

 for admission, etc., will be sent on application to 



GEORGE M. KOBER, Dean, 

 1600 T Street, N. W., Washington, D. C. 



Cambridge Natural History 



Volume VII. 



JUST READY. 



VOLUMES NOW READY 



Vol. 



Vol. 



Vol. 



IL Fiatworms and Mesozoa, by F. W. Gamble, JLSc, Nemertines, by Miss L. 

 Sheldon; Threadworms and Sagitta, by A. E. Shipley, M. A. ; Rotifers, by 

 M. Hartog, .^LA ; Polychaet Worms, by W. B. Benh^m, D.Sc. ; Earthworms 

 and Leeches, by F. E Bbddard, M.A. ; Qephyrea and Phoronis, by A. E. Ship- 

 i.fv. M.A. : and Polyzoa, by S. F. Harmeb, M.A. ^. 



IlL Molluscs and Brachiopods, by Rev. A. H. C oke, A. E. Shipley, M.A., and 

 F. R. C. Reed, M.A. $ 



150 net. 



?.^5 net. 



V. Peripatus, Myriapods, Insects. 



CLAiK, M.A., and D. Sharp, M.A. 



Part L By A. Sedgwick, M.A., F. G. Sin- 



Vol. VL Insects. Part H. By D. Sharp, F.R.S. 



f4.00 net. 

 3.50 net. 



Vol. VII. Fishes, Ascidians, etc. Just read;/. 



Hemichordata, by S. F. Harmbr, Sc.D., F.R.S., Fellow of King's College, Cam- 

 bridge, Ascidians and Amphioxus, by W. A. Herdman, D.Sc. (Edinb.), F.R.S. , 

 Professor of Natural History in the University of Liverpool; Fishes (Exclusive 

 of the Systematic Account of Teleostei), by T. W. Bridge, Sc.D., F.R.S., Trinity 

 College, Cambridge ; Mason Professor of Zoology and Comparative Anatomy in the 

 University of Birmingham; Fishes (Systematic Account of Teleostei), by G. A. 

 Boiilenoer, F.R.S., of the British Museum (Natural History). 



Vol. VIII. Amphibia and Reptiles. By II. Gadow, M.A., F.R.S. 

 Vol. IX. Birds. By A. H. Evans, M.A. 



Vol. X. Mammalia. By F. E. Beddard, M.A., (Oxen), F.R.S. (Prosector to the Zoo- 

 logical Society). 



^4.£5 net. 

 ^4.00 net. 



§13.50 net. 



§4.00 net. 



P.BUSHED j^g MACMILLAN COMPANY '•''nX' Uk'' 



