The ground floor of the building was rearranged s» that the para- 
site division is now provided with four large heated workrooms. The 
largest workroom is L-shaped and is 13 by 35 feet, with an offset of 
1% by 12 feet, thus providing ample room for working tables. Adjoin- 
ing this is a small laboratory room, 12 by 10 feet, for microscopic 
and general laboratory work. A third room, known as the quarantine 
roon, joins the main workroom through a short hallway. This room 
is 13 feet 5 inches by 22 feet and is specially constructed so as to 
prevent the escape of any insect while forsign shipments are being 
unpacked and examined. The four windows consist of dcuble-weight 
glass set in putty so as to be absolutely tight. The floor is double 
anu the walls are plastered and painted white. The entrance to this 
room is guarded by two vestibules each containing a trap window and 
closed by heavily felted doors which seal the entrance when closed. 
The room temperature may be reduced during hot weather to an equable 
temperature for work with insects by a cooling unit which is operated 
by the refrigeration unit in the cellar. If humidity is required 
this may be easily accomplished with the Burrell humidifier (Jour. 
Econ. Ent. 23, pp 994-997). In one corner cf the quarantine room is 
a small sterilizing compartment provided with water and with a gas 
heater for bviling moss or other packing material. The fourth roon, 
which is off the central entrance, is 13 by 15 feet. This is known 
as the may recom and will provide working and storage space for all 
may work in which parasite colonies are recorded. 
Aside from the four rooms occupied by the parasite division, 
there are five additional rooms in the building. One of these houses 
oe photogravhic equipment an arkroom e photogravhic room bei 
the photogrant qui; d dar! » the photograt m bein 
Oo 2 feet, and e darkroon, & ect. ext te the photo~ 
13 by 12 feet, and the dark » 8 by 13 feet. Next te the phot 
graphic room is an insecticide laboratory room, 13 feet 7 inches by 
15 feet & inches, equip ed with all necessary bench space, water, 
ana electrical outlets. Im a small wing of this building there are 
hree offices, each approxinate. Lent > feet. At ore one ov 
t! ffices, ch ap; tely 11 by 15 feet t »resent one of 
nese rooms is occupied rank Iro 0 € eau of i 
tk is occupied by Frank Irons, of the Bureau of agricultural 
Engineering, couperating in investigations on control of the Japanese 
beetle by machinery. another room is occupied by F. M. Wadley, of 
the Bureau of Entomology, whose work is in connecticn with the Dutch 
elm disease. 
TRUCK CROP AND GARDEN INSECTS 
Status of celery leaf tier in Florida.--According to reports sub- 
mitted by C. F. Stahl, the low numbers of Phlyctaenia rubigalis Guen. 
in the Sanford, Fla., area may be attributed to the subnormal temper- 
atures throughout the ,eriod from mid-January to the end of March. 
Because of this low tempyersture only a slight development of the 
celery leaf tier occurred in the field and the broods were not as 
