APPENDIX. 
A. DR. GRAY’S WILL. 
Dr. Gray in his will left to the herbarium the proceeds 
of all his copyrights. His strong belief in the importance 
of a large and well-kept herbarium, as an establishment 
indispensable not only to the development of botanical 
studies at Harvard but also to the diffusion throughout the 
whole country of a knowledge of its flora, is shown by this 
bequest, and also by the active efforts he was constantly 
making in its behalf during his life and by the personal 
sacrifices to which he cheerfully submitted, that the herba- 
rium might profit. Some of the difficulties in the develop- 
ment of his cherished project will already have suggested 
themselves to the reader of these pages. Others may be 
touched upon briefly here. 
The reputation of Dr. Gray at home and abroad natu- 
rally served to draw to the herbarium large numbers of 
specimens, and the number was increased by the purchases 
which he contrived to make from time to time, either from 
his own scanty means, or from the occasional gifts of friends. 
The storing of his large and valuable collections in the small 
house in the garden where he lived was attended by so 
much danger of destruction by fire that he offered to present 
the collection to Harvard University, if a suitable building 
for its reception were provided ; and, greatly to his relief, 
is herbarium was transferred in 1864 to the new fire-proof 
building, for whose construction twelve thousand dollars 
were given by his liberal friend, Mr. Nathaniel Thayer. 
If Dr. Gray was able during his life to secure a building 
which at the time of its completion seemed ample for its 
purpose, he was less fortunate in his efforts to obtain a 
