(30) 
Conservatories. There are now in the conservatories 9,219 
plants, an increase of about 600 over the number grown in 
1906. This, together with the increase in the size of the 
plants, has emphasized the crowded condition of these build- 
ings for some time past, and makes evident the immediate 
need for the completion of at least a part of the new range. 
This crowded condition is especially manifest in houses nos. 
4 and 8, which are devoted to the smaller specimens of the 
tropical exogenous plants. House no. 4, which has hitherto 
served as an overflow house for plants which become too large 
for houses nos. 7 and 8, has itself become so crowded that 
there is not sufficient room for many additions there. There 
are many specimens at the propagating houses which might 
be placed on view in the public conservatories, were it not 
for this crowded condition. The following table gives the 
number of plants in each house: 
House no. 1 394 House no. 9 92 
- 2 446 : Io = 460 
a 3 312 ne II 261 
- 4 440 “rz 748 
: 5 1,519 ~ 13 515 
te 6 808 - I4 641 
- 7 = 749 7 15 1,099 
es 8 735 
In the conservatory collections, including those at the prop- 
agating houses, there are now 204 families, 1,393 genera, and 
7,881 species and varieties, represented by 18,364 specimens. 
There have been 2,366 zinc and 102 lead show labels made 
for these collections, making a total of 2,468. 
Propagating Hfouses and Nursertes, A great part of 
houses nos. § and 6 have been devoted to the study collection 
of cacti, and the larger part of house no. 4 has been given 
up to the experimental work in charge of the Director of the 
Laboratories. It has been necessary to make use of a por- 
tion of this house to accommodate the ordinary collections. 
A part of the nursery has also been reserved for the use of 
the Director of the Laboratories. 
