FLESHY AND WOODY FUNGI 227 



cologist, but to the mycophagist they are of use as food. Only one 

 poisonous form is known, and that is the medicinal one, Fames laricis, 

 but it is so bitter and unattractive, as not to be tempting. Some of 

 them are destructive to living trees, to timber used for mine props, and 

 structural purposes, and to wood exposed to the weather, or in contact 

 with the soil. 



The ease with which the polypores are collected and preserved 

 makes them especially suitable for systematic study in the classroom. 

 Besides, they retain their characters when dried, so that the keys used 

 for their identification can be readily followed. Fortunately also we 

 have several manuals which cover the different sections of our country. 

 They are reasonable enough in price to be furnished for use in the class- 

 room. It is suggested that boxes of the different kinds used for this 

 purpose be filled with enough specimens to furnish each member of 

 the class in mycology with one specimen of each kind. There should 

 be a sufficient number of manuals of the region, where the botanic 

 institute is situated, to supply every two members of the class with 

 one, so that the students may use them in groups of two. The 

 advertisement of the books is here reproduced for the use of teachers 

 of mycology. 



MANUALS OF POLYPORES AND BOLETES 



By William A. Mureill, A. M., Ph. D., Assistant Director of the New York 

 Botanical Garden, Editor of " Mycologia,'' and Associate Editor of "North American 

 Flora." 



Northern Polypores, November, 19 14. Including species found in Canada and 

 the United States south to Virginia and west to the Rockies. 



Southern Polypores, January, ipis- Including species found in the United 

 States from North Carolina to Florida and west to Texas. 



Western Polypores, February, 1915. Including species found in the states on 

 the Pacific coast from California to Alaska. 



Tropical Polypores, March, 1915. Including species found in Mexico, Central 

 America, southern Florida, the West Indies, and other islands between North 

 America and South America. 



American Boletes, November, 1914. Including all the species found in temperate 

 and tropical North America, both on the mainland and on the islands, south to 

 South America. 



As satisfactory keys of the different genera and species of the poly- 

 pores and boletes are given in these manuals, and as it is presupposed 

 that their use will be adopted, keys of the more common genera and 



