slides ne Attachable to any Siecivic 
FOR SALE d 
A Collection of about 2,000 SCANDINi 
PLANTS. For further information all 
R. WESSEN, 
226 Orleans Street, - CHICAGO) 
New Reflecting = 
Lantern Lectures on the Calculli 
For need rojecting on the -— oa in ‘ c 
natural colors Pe otos, engravings, sketches ae | 
a prints, flowers, specimens, y mneehaniaal Variations 
dels and cuts a books. Also shows lantern 
By OSKAR BOLZA, Ph.D. — 
zonal so carry a large stock of Lantern Slides to 
mtte,aitegarry _— Selene Subjects. Of the Department of "Chicago | 
ntern Slides on Geography University of Chi 
Lantern Slides on Geology tok Botany 
La nm SL on Na 
y. en 
Lantern Slides on Astronomy and be atomy. ‘ : ad a | 
son a on ! \merican Histo get $4.00, net, $4. 10, posta : 
preci perso a ngineering and Architecture, 
Lantern Slides on Mining. BS 
Lantern Slides illustrating many other subjects, e ° . f 
We rent slides at low rates. ites Sages lists, The University of Chicago fe 
naming particular subject of inter CHICAGO and 156 Fifth Avenue NEW ‘ 
WILLIAMS, BROWN & an ie : 
ge acturers of Stereopticons, Microscopes, etc., —_—_—_— 
t. 24 918 Chestnut St., Phila. | 
— 
Methods in Plant Histolog 
By CHARLES J. CHAMBERLAIN, A.M., PH.D., Instructor in Botany in the University ot Chie 
= 
A CONSTANT HELP to Teachers and Students of B 
CONTAINS DIRECTIONS FOR COLLECTING AND PREPARING 
PLANT MATERIAL FOR MICROSCOPIC INVESTIGATION 
T is based upon a course in botanical micro-technique, and is the first complete man 
be published on this subject. It is the result of several sacar work big classes in 
d aa ; 
at the awa 
versity. It aims, therefore, to meet the requirements, not say of the s acu who has bes” 
ance of an instructor in a fully equipped laboratory, but also the ee who must work by 2¥ 
and with limite apparatus. Fre ee-hand sectioning, the paraffin method, the collodion ig 
i are gi or making aah preparations as are nee y who wish to S¢ 
plant kingdom from the alge he xt gp plants. Special attention is p d fic 
ng ryokinetic figures, because the tudent who masters this akties will find little di ‘ 
histological laboratory | 
‘ie. PP., 8vo, illustrated, cloth, (ze) $1.50; postpaid $1.59 . | 
For sale by dealers or by the publishers | 
The University of Chicago Press, Chicago, Illinc 
