SCIENCE TEACHERS AGREE 



that the 



Mcintosh college bench lantern 



is adapted to more lines of SCIENTIFIC 

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 Is simple in construction and sold at a 

 low price. Write for particulars 



Mcintosh stereopticon company 



401-2 Atlas Block 





CHICAGO, ILL. 



The Life History of PolysipHoiiia Violacea 



By SHIGEO YAMANOUCHI, Fellow in Bota 



ny in the University of Chicago 



■ :>4 pages, 10 plates, 8vo, paper, net $1.00, postpaid $1.05 



Various authors have published Accounts of investigations on the red algae, but the true life history 

 of the group has never been given. This paper presents first the results of the author's studies of 

 the mitosis in germinating tetraspores and carpospores, and in the vegetative cells of mature plants; 

 hen comes an account of spermatogenesis, formation of procarp, fertilization, and development of 

 the cystocarp; tetraspore formation is next considered, followed by a description of certain abnor- 

 malities; finally there is a discussion of the cytological phenomena and alternation of generations. 



ADDRESS DEPT. P 



Chicago THE UNIVERSITY OF CHICAGO PRESS 



New York 





An Indispensable Book for Students of Botany 



Methods 



in Plant Histology 





SECOND EDITION- ILLUSTRATED 



By Charles J 





icago 





HIS BOOK contains directions for collecting and preparing plant material 

 for m,croscop,c investwration. It is based upon a course in botanica^mfcro- 



f<^u«;~ j • .i. r 7 ,WM " UV,U «^vu a uuur&c in Dotanical micro- 



F™ t a q ?■ and ' S u thC firs L com P lete manual ^ be published on th,s subject 



lZt A** S ? Ct '° n ^' ? c parafiin method ' the celloidin Method, and the tlvcerine 

 method are treated m detail. In later chapters specific directions are Sven for 

 making such preparations as are needed by those who wish to study fhe plant 



the g staTninTnf t A,g l 6 ^V* 6 fl ° Wen " ng plam " S P eciaI attention^ paid To 

 the staining of karyokinetic figures, and formulas are given for the reagents 



enlarged the volume L m ,68 To £ p a P ge s . ** ChaDgeS "* addi,ionS havc 



>7a pp., 8vo, cloth, net, »j. 25; postpaid, $2.39. 































THE UNIVERSITY OF CHICAGO PRE 





