SCIENCE-ADVERTISEMENTS 



Laboratory Exercises in 

 General Chemistry 



By Roland H. Williams, A.M., Head of De- 

 partment of Science, Horace Mann School, 

 and Instructor in Teachers College, Co- 

 lumbia University, and Walter G.Whit- 

 man, A.M., formerly Instrnctor in Science, 

 State Normal School, Salem, Mass. 

 Price $0.36; with loose-leaf binder, SO. 72. 



In this manual are seventy-six exercises 

 adapted for classes in elementary chemistry. 

 The loose-leaf plan makes it possible to adapt 

 the manual to the order of topics in any text- 

 book. 



Included are general laboratory directions, 

 lists of chemicals and apparatus, emergency 

 measures in case of accident, useful tables, 

 drawings, etc. Each exercise sheet has a list 

 of the chemicals required and directions for per- 

 forming that exercise, while a blank space is 

 provided for the student's notes, which are 

 suggested by pertinent questions. 



AMERICAN BOOK COMPANY 



The verdict given 

 Norton's 



Elements of Geology 



is one of unqualified endorsement 



" Neither too long nor too short for the 

 student to read while attending an 

 average course of lectures." 



"The illustrations are of a high order 

 and very suggestive." 



"One of the best elementary expositions 

 of geologic processes." 



"Avery clear presentation of the most 

 important facts of geology." 



461 pages, illustrated, 31.40 



Ginn and Company 



Boston 

 Atlanta 



New York Chicago 

 Dallas Columbus 



London 



San Francisco 



UNIVERSITY OF CALIFORNIA 



PUBLICATIONS 



The University of California issues publicationa in 

 the following series among others : 



Agricultural Science Mathematics 



American Archaeology Pathology 



and Ethnology FUlosophy 



Botany Physiology 



Economics Paychology 



Geology Zoology 



Memoirs of the TTnlyerslty of CaUfornla 



Bulletin and Pulillcations of the Lick Observatory 



RECENT TITLES 



New and Noteworthy Californian Plants, II, by Harvey 

 Monroe HaU S0.I5 



The Epigene Profiles of the Desert, by Andrew C. 

 Lawson 25 



New Horsea from the Miocene and Phocene of Califor- 

 nia, by John C. Merriam 10 



Notes on the Tintinnoina : 1. On the Probable Origin of 

 Didyocysta tiara Haeckel, 2. On Petalotricha entzi, 

 sp. nov., by C. A. Kofoid 05 



Binary and Multiple Fission in Hexamitus, 



On a New Trichomonad Flagellate, Trichomitua parvus, 



from the Intestine of Amphibians, by Olive Swezy 25 



On Blepharocorys equi, a New Ciliate from the Caecum of 



the Horse, by Irwin C. Schumacher 10 



Camplete list of titles and prices will be seut on application 



TKE UNIVERSITY PRESS. Berkeley, Californlti 



Send for descriptree circulars and sample 

 pages 



PRINCIPLES OF 



STRATIGRAPHY 



BY 



AMADEUS W. GRABAU. S.M.. S.D. 



PROFESSOR OF PALAEONTOLOGY IN 

 COLUMBIA UNIVERSITY 



Large Octavo, 1150 pages, with 254 illustrations in the text. 

 Cloth hound, price, $7.50. 



Send for descriptive circular 



A. G. SEILER & CO. 



PUBLISHERS 

 1224 Amsterdam Avenue NEW YORK, N. Y. 



