No. 17] FOURTH BIENNIAL REPORT II 



days ; and in an appendix is included a statistical summary of 

 the plants of Connecticut. 



The work of Professor White on the Hymeniales is a sup- 

 plement to the Preliminary Report on the Hymeniales by the 

 same author, published in 1905, as Bulletin No. 3. The plants 

 treated in these two reports are the fleshy and woody fungi, 

 some of which are edible mushrooms, while others are ex- 

 tremely poisonous. The present bulletin consists of three parts. 

 The first part gives analytical keys for the discrimination of 

 the species of the Agaricacese — the most important family of 

 the group, and the one which includes most of the edible species. 

 The second part gives detailed descriptions of some of the edible 

 species of mushrooms. The third part gives a list of all the 

 species of Hymeniales which have been discovered in the state 

 since the publication of the former Bulletin. Both of these 

 bulletins are illustrated with beautiful plates, exhibiting the aspect 

 of many of the species, from original photographs by the author. 

 The study of mushrooms has been very popular in recent years, 

 and Professor White's former bulletin has attracted much at- 

 tention. Doubtless all who have found the former bulletin use- 

 ful will want to avail themselves of the present supplementary 



report. 



BULLETINS IN PRESS 



Two Bulletins are passing through the press at the date of the 

 present report. These are the following : — 



No. 13. The Lithology of Connecticut: by Joseph Barrell, 

 Professor of Structural Geology in Yale University, and Gerald 

 Francis Loughlin, Instructor in Geology in Massachusetts Insti- 

 tute of Technology. 



No. 16. Guide to the Insects of Connecticut : prepared under 

 the direction of Wilton Everett Britton, State Entomologist, and 

 Entomologist of the Connecticut Agricultural Experiment Station. 

 Part I. General Introduction : by Wilton Everett Britton. Part 

 II. The Euplexoptera and Orthoptera of Connecticut: by Ben- 

 jamin Hovey Walden, Assistant in Entomology, Connecticut 

 Agricultural Experiment Station. 



The bulletin on the Lithology of Connecticut includes a gen- 

 eral introduction to lithology by Professor Barrell, and a special 

 description of forty-one typical rocks from Connecticut localities 

 by Dr. Loughlin. In the general part of the work, lithology is 



