22 
volumes in the bindery and store-rooms not yet classified. No 
attempt has yet been made to estimate the number of unbound 
volumes and separates. 
ng other special features it may be said that the library is 
nearly complete in literature bearing on the fungi, mosses, and 
ferns 
e main series of bound volumes and separates will be kept 
intact in the library, ane collections of duplicate copies of certain 
special works are provided in the herbarium and ee 
The following ee govern the use of the 
1. Books of the regular library are not to be aa from 
the museum buildin 
2. cers and stud nts are requested to remove books from 
the library as little as possible. Every volume is to be replaced 
n the shelves immediately after consultation. 
may be taken from the library only after a card bear- 
ing the fll title and perl classification, number of every 
volume, and the e of the borrower, shall be put in their 
ae on the s ive 
. All books eee from the library shall be returned the 
same day. 
§. The above rules apply to pamphlets and parts, as well as 
to bound volumes. 
of the departmental collections are not subject to 
these ne The efficiency of such collections demands 
Departmental collections are further subject to such rules as may 
be found necessary for their conservation. 
Anna Murray VAIL. 
BOTANICAL BOOKS OF DR. HOSACK. 
Copies of the following books, mainly from the library of the 
late Dr. David Hosack, have recently been presented to the 
Garden by the New York Academy of Medicine. Many of the 
works are now rare and difficult to obtain, and the gift is a most 
timely and valuable one. 
