TWELFTH ANNUAL REPORT OF THE DIRECTOR. 13 
Including the border of the newly graded addition, and 
the woody plants destined for the North American synop- 
sis but yet in nursery, the Garden now contains 9,194 
species and varieties of plants (including annuals which 
were cultivated in their season and are likely to be culti- 
vated or replaced by others another spring), of which 5,547 
are annuals or hardy perennials, and 3,647 are cultivated 
under glass. As compared with 1899, this shows a net 
increase of 67 species.* The plants added in 1900 consist 
of 344 entries, of which 69, including 11,545 plants or 
packets of seeds and valued at $808.85, were collected or 
propagated by Garden employees; 178, consisting of 4,001 
plants or seed-packets and valued at $635.95, were pre- 
sented, mainly in exchange for similar material or, chiefly, 
for the publications of the Garden; and 94, including 
26,829 plants or packets of seeds, were bought, the 
expenditure for plants and seeds through the year, as 
shown by the Secretary’s books, amounting to $3,254.39 
(of which sum $2,236.55 was for the planting of the 
border). By way of exchange, 239 packets of seeds and 
267 plants, appraised at $46.85, were distributed to corre- 
spondents of the Garden; and 2,416 surplus plants and a 
few packets of seeds were presented to schools and char- 
ities, in continuation of the policy inaugurated some years 
since.f 
A further extension of the plant houses begun in 1894} 
and enlarged in 1897, has now been made by the erection 
of a tower at the northwestern corner of the system, similar 
to that built at the northeastern angle in 1897, and con- 
nected with the houses already standing and extended south- 
wardly by wings of similar design to those previously built, 
but of steel construction. In these additions, small but 
representative collections of succulents and of Acacias and 
* Report. 11:3 13. + Report. 10; 15. 113 13. 
t Report. 6314. 8:41. 9: 14. 103 13. 
