Ze 
floral art, and has been steadily improved, under her supervision, 
by Japanese gardeners. For details and explanations of the mean- 
ing of the various features see ‘The Japanese Garden of the 
3rooklyn Botanic Garden”: Guide No. 4. (Brooklyn Botanic 
Garden Record 19: 197-234. July, 1930.) Out of print, but 
available in libraries. 
Rock Garden 
The Rock Garden, constructed in the spring of 1916, is, in point 
of time, perhaps, the first rock garden of any considerable size in 
a public garden or park in the United States. The rocks used in 
its construction are glacial boulders which were uncovered in the 
course of grading operations on other parts of the grounds; they 
rocks on Long Island, with the exception 
are the only “ native” 
of one small outcrop on the northwest shore. The general 1c 
an 
ea in 
making the garden was that of representing a boulder-strewn slope, 
but this design, of necessity, was modified in places to provide 
proper cultural conditions as to drainage, depth of soil, and shade. 
The garden is planted with about eight hundred species and vari- 
eties of alpine, saxatile, and other plants suitable for rock garden 
culture. 
Although the rock garden enthusiast may expect to find some- 
thing of interest in bloom during every month of the year, it 1s in 
April, May, and June that the Rock Garden provides its greatest 
display of blossoms. In several years there have been flowers 
in bloom in the Rock Garden in each of the twelve months.  Per- 
sons interested in rock gardening will find Guide No. 5, The Rock 
Garden of the Brooklyn Botanic Garden, helpful; also, Leaflets, 
Series XI, No. 6, The Rock Garden. 
Conservatory Plaza and Waterlily Pools 
The initial development of the Conservatory Plaza and Water- 
lily Pools, including the paved walks, eight stone seats, four 
herbaceous borders, south pool for hardy waterliles, and north 
pool for sub-tropical and tropical forms, was due to a gift to the 
30tanic Garden of $19,260 in 1919 and 1920 from Mr. Alfred T. 
White. The south pool contains 26 hardy species, and the north 
