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Lectures on the Calculus of 



Variations 



By OSKAR BOLZA, Ph.D. 



Of the Department of Mathematics in 



University of Chicago 



the 



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microscopic Slides 



-^ue^t:' 



An Indispensable Book for Students of Botany 



Methods in Plant Histology 



SECOND EDITION- ILLUSTRATED 



By Charles J. Chamberlain, Ph.D. 



Instructor in Botany in the University of Chicago 



THIS BOOK contains directions for collecting and preparing V'^^^l'^^'^'^'l 

 for microscopic investigation. It is based upon a '^'^Yr^'^ .n S^if^biect 

 technique, and is the first complete manual to be published f^'\r^^^ 

 Free-hand sectioning, the paraffin method, the celloidin method, and the g^> «rme 

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 jnaking such preparations as are needed by those who wish ^^ ^ "f.^^^ J] "o 

 kingdom from the Algae up to the flowering plant. Speoal ^«^" '^." " P^' ,„„ 

 the staining of karyokinetic figures, and formulas are S^^^" j°^ jLk^f Ae 

 commonly used in the histological laboratory. In preparmg ^^.^^=^^^''"4^^^^^^^ 

 author has kept in view the advance in the science smce the book fij^^^PPf^^^ 

 Professor Klebs's methods for securing the various reproductive Ph^^^ '^^^^ 

 Algae and Fungi have been outlined in a practical ^^y-. ^^l^^" f// Xal ^i'h 

 more attention has been given to collecting material. ^V' ^^SSxlZ special 

 the Venetian turpentine method, microchemical^ '"''':.l'!t;/°nd adS'ns^have 



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