179 
highly instructive. Mr. John S. Holbrook, an American stu- 
dent of landscape architecture i in Paris, who has been studying 
for 
Exposition, kindly gave me ae and assistance of great 
value and saved me much time; I have expressed to him m 
appreciation of his c pee ‘y was also very fortunate in 
securing the cooperation of Mr. James M. Macoun, of t 
aes —_ Natural History ee of Canada, who ie 
in Paris since the oe of the Exposition in charge of 
a "Canadian ee Exhi Finding that he had leave of 
absence from his official pe for the purpose of a critical 
study of the same objects that we were specially interested in, I 
gave ote a commission as a special Museum Aid for one month 
oO s such museum a erbarium ba mens as seemed 
Sea and aesicble for our collection This has operated 
to obtain, for a small sum, a ee amount of interesting 
and valuable material. It is gratifying to record that through 
the farsighted activity of Dr. W. P. Wilson, Director of the 
hiladelphia Museums, and by the aid of a liberal aa raga 
by that city, a very important series of economic vegelap ble 
c 
lection of North American woods recently presented to us by 
Mr. Morris K. Jesup. 
I purchased from C. Simon, of St. Quen, a large collection of 
cacti and corer succulent E aiaee nee our Sirus being a 
partially d t Horticultural aed 
and I also obtained by eae a collection - over 
specimens of mosses for our herbarium ; through Dr. Arthur : 
Jacjewski of the ieee ‘Botanical Garden of St. Petersburg, I 
arranged for securing by exchange a large collection of Siberian 
shrubs and hardy perennials; arrangements for the exchange of 
living plants and seeds were also made with M. de Vilmorin, and 
with Professor Cornu of the Jardin des Plantes, and of herbarium 
and museum specimens with M. Drake del Castillo, M. Rouy, 
