57 



penetrated far inland. The herbarium of the New York Botani- 

 cal Garden, which recently did not contain more than 3,000 

 sheets from this country, has received important additions from 

 the Jenman herbarium and from the collections of Hitchcock, 

 Gleason, and de la Cruz, so that the number of sheets now avail- 

 able for study is in excess of 6,000. This is still a small rep- 

 resentation of the flora, which is estimated to contain 6,000 

 species of flowering plants alone. These collections make it 

 apparent that British Guiana still contains a very large number 

 of undescribed species. Geographically, the province seems to 

 comprise five zones: (i) the coastal lowlands, (2) the zone of 

 low hills, (3) Mt. Roraima and the adjacent mountains, (4) the 

 savanna region of the Hinterland, and (5) the range of low hills 

 along the Brazilian border. The first three of these zones is 

 densely wooded, the fourth is largely open grass land, and the 

 botanical nature of the fifth is almost unknown. The chief 

 additions to the flora are to be sought in zones three, four, and 

 five, where numerous montane and Amazonian species are to 

 be expected. 



Adjournment followed. 



Marshall A. Howe, 



Secretary. 



Dr. A. S. Hitchcock, accompanied by his wife, left in May 

 for South America, where he will make botanical collections. 

 Three months will be spent in Ecuador, the work being a con- 

 tinuation of the co-operation between the U. S. Department of 

 Agriculture, the Gray Herbarium, and the New York Botanical 

 Garden in studying the botany of northern South America. 

 About three months will be spent in Peru and Bolivia studying 

 grasses for the Department of Agriculture. 



Dr. R. M. Harper spent April and part of May in northern 

 Arkansas making a survey for one of the larger religious denomi- 

 nations. Incidentally he made some botanical observations 

 which we hope to publish before long. 



