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considerable re-arrangement, in house No. 5. House No. 7, 
containing two compartments, will ‘be operated as a tropical 
house, occupied by some of the groups now in houses 3, 4 
and 13. 
The collections already in the older houses and a considerable 
number of plants grown during the year in the propagating 
houses on the eastern side of the Garden, will go part way to- 
ward stocking the large additional space, but several thousand 
more specimens than those thus in hand are needed to effect 
even a preliminary stocking of the new houses. To obtain some 
of these, three expeditions have been arranged; Dr. MacDougal 
has gone to Arizona to secure cacti and other succulents; Dr. 
Britton may go to Cuba in March, after Dr. MacDougal’s return, 
for the purpose of obtaining certain tropical species, and Mr. Nash 
will goto Europe in April in order to arrange for some additional 
exchanges with botanical gardens. A considerable number of 
