(435) 



and is engaged in the study of these plants. A set will be- 

 come the property of the Garden. 



Mr. S. H. Burnham, museum aid, has continued his work 

 upon the flora of Lake George and vicinity. 



My own work upon the flora of the West Indies has been 

 carried steadily forward, and critical examinations made of 

 collections from that region brought in various expeditions. 

 A visit was made to the Royal Gardens, Kew, for the pur- 

 pose of study of type-specimens of Cyperaceae and other 

 groups. Much attention has also been given to a critical 

 study of the Crassulaceae, in the preparation of a revision of 

 that family for the Systematic Botany of North America 

 about to be published by the Garden. A large number of 

 collections from various parts of the world have also been 

 determined, and an examination has been made of material 

 from South America. 



Officers of cooperating institutions have also carried on in- 

 vestigation as below. 



Dr. L. M. Underwood, professor of botany, Columbia 

 University, has continued his studies of the ferns and fern- 

 allies of North America in the preparation of a series of 

 monographs on this subject. He has also determined a large 

 amount of material belonging to the pteridophytes, from 

 South America. 



Professor F. E. Lloyd, adjunct professor of biology in 

 Columbia University, has continued his embryological re- 

 searches and published brief articles on various subjects, in- 

 cluding the vivipary of Podocarpus. An advanced stage 

 has been reached in the preparation of a text-book dealing 

 with pedagogical methods in biology. 



Dr. H. M. Richards, instructor in botany, Barnard Col- 

 lege, has made some investigations upon the influence of 

 wounding upon turgidity. 



Dr. C. C. Curtis, tutor in botany, Columbia University, 

 has made some experimental observations upon the influence 

 of various conditions upon transpiration, and obtained data 

 as to the rhythm in this process exhibited by many plants. 



