MERICAN MEN OF SCIENCE 
A BIOGRAPHICAL DIRECTORY 
EDITED BY J. MCKEEN CATTELL 
Professor of Psychology in ihed ti ; Editor of Sczexce and of The 'Popuinr Science Monthly 
There are included in the directory the records of more than four thousand men of —— 
and it ts Assn rea . the entries are tolerably complete for those in North America wh 
oha 
ried o rch workin the aagaed and exact sciences. It was intended that each entry Nia 
pertieel pe sehaaste, as follow. 
(1) The full name with title and Ladd: , the part of the name ordinarily omitted 
in correspondence being in parenthests, (2) The department of investigation given in 
ttalics. (3) The place and date of birth. (4) Education and degrees. (5) Posttions with 
dates; the present — being given in — (6) emporary and minor positions. 
7) Honorary degrees and other scientific hono Bid Me pay Sas in plore -3 and learned 
Socteties, (9) C. hief subjects of research, th 
perseth in progress 
ork has been edited with great care and is believed to be as complete and accurate asa 
book - the. Pitney /t is well printed on all rag paper made expressly for the book and ts Sond 
in buckram with leather label. 
Price: $5.00, zet, postage paid. 
‘the SCIENCE, PRESS, see cs 
An Indispensable Book for Students of Botany 
Methods in Plant Histology 
SECOND EDITION—ILLUSTRATED 
By CuHar.es J. = HAMBERLAIN, Pu.D. 
Instructor in Botany in the University of Chicago 
HIS BOOK contains directions re collecting and preparing see material 
for microscopic investigation. It is based upon a course in ical micro- 
nd is i 
r 
kingdom from the Algae up to the flowering plant. 
the staining of karyokinetic figures, and formulas are given for the reagents 
more attention has been given to collecting material. New c chapters deal with 
the Venetian turpentine method, microchemical tests, free-hand sections, special 
methods, and the use of the microscope. These changes and additions have 
enlarged the volume from 168 to 272 pages 
272 pp., ‘Bvo, cloth, net, $2.25; postpaid, $2.39. 
THE UNIVERSITY OF CHICAGO PRESS 
natin, 
ee 
