115 
Codperation with the Board of Health—During July the Gar- 
den furnished to the Brooklyn Branch of the Department of 
Health mounted specimens of the poison ivy, and also of the Vir- 
ginia creeper for comparison, to be used in the district offices of 
the department for purposes of identification. It is proposed by 
the Department to take measures to eliminate, as far as prac- 
ticable, not only poison ivy, but also the Great Ragweed, the 
pollen of which is regarded as an important contributing factor 
in causing hay-fever. In connection with the latter the Garden 
has also supplied the Borough offices of the Health Department 
with herbarium specimens of the ragweed, both the form with 
incised leaves (Ambrosia trifida), and the entire-leaved form 
(Ambrosia trifida var. integrifolia). The Department was also 
supplied, for distribution, with a quantity of the Botanic Garden 
Leaflets of May 17, 1916, on treatment of poison ivy poisoning. 
In October mounted herbarium specimens of the Jimson Weed 
(Datura Stramonium) will be furnished for similar use. Cases 
of serious poisoning, especially of children, by eating portions of 
the Jimson Weed are not uncommon. 

Harold Uhrbrock, who has worked at the Garden for the last 
three years and is now in his second year in high school, raised 
in our greenhouse this spring, independent of any instruction, 
although he had received the necessary knowledge in his past 
courses, 800 celery plants, 325 tomato seedlings, and 72 plants of 
New Zealand spinach. During the past summer ae boy took 
charge of garden work in a boys’ camp at Ticonderoga, N. Y. 
He packed and sent 125 tomato plants to the camp, gave 100 to 
the Botanic Garden, planted some in his home garden, and pre- 
sented the remainder to a Long Island farmer. His celery and 
spinach plants were used in the same way. This is a little side- 
light on the independent work that our older boys and girls do 
at the Botanic Garden. 
On April 13, at the last meeting of the Boys’ and Girls’ Clubs of 
the Brooklyn Botanic Garden, two boys, Fred Kholand, Junior 
High School, P.S. 85, and Frank Henjes, P.S. 92, received 
their silver buttons from the Director of the Garden. The 

