INTRODUCTION, V 



objects of nature worthy of observation, if it succeeds in aiding those 

 who are seeking information of the edible kinds, and stimulates 

 some students to undertake the advancement of our knowledge of 

 this group, it will serve the purpose the author had in mind in its 

 preparation. 



I wish here to express my sincere thanks to Mrs. Sarah Tyson 

 Rorer for her kindness in writing a chapter on recipes for cooking 

 mushrooms, especially for this book; to Professor I. P. Roberts, 

 Director of the Cornell University Agricultural Experiment Station, 

 for permission to use certain of the illustrations (Figs. 1-7, 12-14, 31- 

 43) from Bulletins 138 and 168, Studies and Illustrations of Mush- 

 rooms; to Mr. F. R. Rathbun, for the charts from which the colored 

 plates were made; to Mr. J. F. Clark and Mr. H. Hasselbring, for 

 the Chapters on Chemistry and Toxicology of Mushrooms, and Char- 

 acters of Mushrooms, to which their names are appended, and also 

 to Dr. Chas. Peck, of Albany, N. Y., and Dr. G. Bresadola, of 

 Austria-Hungary, to whom some of the specimens have been 

 submitted. 



Geo. F. Atkinson, 

 Ithaca, N. Y., October, 1900. Cornell University. 



SECOND EDITION. 



In this edition have been added 10 plates of mushrooms of which 

 I did not have photographs when the first edition was printed. It 

 was possible to accomplish this without changing the paging of any 

 of the descriptive part, so that references to all of the plants in 

 either edition will be the same. 



There are also added a chapter on the " Uses of Mushrooms/' 

 and an extended chapter on the ''Cultivation of Mushrooms." 

 This subject I have been giving some attention to for several years, 

 and in view of the call for information since the appearance of the 

 first edition, it seemed well to add this chapter, illustrated by several 

 flash-light photographs: 



G. F. A. 

 September, 1901. 



