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* 
A Laboratory Guide 
in Bacteriology]|j 
By PAUL G. HEINEMANN ]/}. 7 

Second Edition, Enlarged and Revised 

The Guide is confidently offered in the 
belief that it will commend itself; even more 
than did the first edition, to elementary students 
in medical bacteriology, the bacteriology . of 
water and milk, soil bacteriology, and in the ; 
study of yeasts and molds. The general course R Heme he pevaign - 's 
outlined in its pages is suitable alike for stu- € 3 min oO n 
dents of domestic science and for those who Adding and Subtracting 
wish to prepare themselves for advanced work y p Cc wi ra t Ss. 
in the various branches of bacteriology. (Wahl! Adding Mechanism) 
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216 PAGES, 12MO, CLOTH some page. 
But this is not all, - It does such work more 
P OSTP AID - - - $ 1.61 easily, more raptdly, and more accurately than the 
=—_—_— ~ human brain has ever ‘ormed similar labor. 
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° . ° and super-human in the way it does it, 
The University of Chicago Press Pilscehrated besalelat sevtt on recpasst 
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hicago, Illinois (ine 

ated) 
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From the Cambridge U. niversity Press 
The Genus Iris 
By WILLIAM RICKATSON DYKES. With 47 colored drawings by F. H. Round, 
. ne colored plate of seeds by Miss R. M. Cardew, and thirty line drawings by C. W 
Johnson. Handsomely bound in Roxburgh—dark green leather back and 
sides—with lettering in gold and gilt top. Demy folio. $38.36 postpaid. 
“Mr. Dykes-has succeeded Sir Michael Foster as the chief authority on the 
iris; and, like Foster, he has not been content with a merely botanical knowl- 
edge of it. Besides examining the herbarium collections at Kew, Berlin, 
Vienna, and other places, he has grown in his own garden, and, whenever 
possible, has raised from seed more species, probably, than anyone else in 
England, and perhaps than anyone else in the world. This book must be the 
basis of all future study of the subject, for it is the result of knowledge both 
Practical and theoretical, and in that combination unique. The colored 
drawings by Mr. Round are not merely an ornament to the book. They are 
far more artistic in their simple accuracy than most modern drawings of the 
same kind. . . . . The work does credit to the publishers as well as to the 
author and artist.’—Times. 
——_ncrestiteenaetansantentitaain 
The University of Chicago Press, Chicago, Illinois 




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