oS ten 
TROPICAL, SUBTROPICAL, AND ORNAMENTAL PLANT INSECT INVESTIGATIONS 
A. C. Baker, in Charge 
Dr. C. I. Bliss, in charge of the Division's field laboratories in 
New Orleans and Mexico City, has been in Washington since January 5, re—- 
viewing work and plans. His principal effort during this time has been 
given to the handbook on experimental analysis under preparation in the 
Division. The first section ready for publication will deal with the anal-— 
ysis of field experiments on control of the codling moth, This pest has 
been chosen aS a representative of those insects the mortality of which, 
as a result of control work, can not be ascertained directly; it must be 
gauged from the influence of the insect on the crops rather than from an 
actual count of living and dead individuals. Dr. Bliss's stay in Washington 
has grown out of the necessity of examining data kindly placed at our dis-— 
posal by Dr. A. L. Quaintance, of the Division of Deciduous-Fruit Insects, 
and the benefits from consultation with investigators of the codling moth 
then in Washington. It is expected that the manuscript will be offered for 
publication in February. 
A. W. Cressman and Miss Eessie M. Broadbent, of the field laboratory 
at New Orleans, stopped in Washington for conference on their return trip 
from the scientific meetings in New York at holiday time. 
Dr. C. A. Weigel delivered an address on "Insect Enemies of Carna— 
tions" before the American Carnation Society at its annual convention, 
held on January 30 and 31, at Lancaster, Pa. 
A New Field Laboratory 
On January 2, 1929, the investigations on insects attacking orna— 
mentals, especially bulbs, in the Northwest, were transferred from their 
former location at the Western Washington Experiment Station, at Puyallup, 
to the new field laboratory of the Division at Sumner, Wash. The rela— 
tions with the Experiment Station have been most cordial, and it is only 
by reason of necessity that the change has been made, The Experiment Sta- 
tion, already cramped for room, could provide only one small office, entirely 
inadequate to the work. 
The new field laboratory is located on the grounds of the Pierce 
County Farm, near Sumner, and the buildings, erected for our use by the 
county, were made possible through the efforts of the growers in the North— 
west. The laboratory plant consists of a group of buildings comprising 
the main laboratory, shop and storage shed, greenhouse, and insectary. 
The main building contains two offices, a biological laboratory, $2 by 
l2 feet in size, a chemical laboratory, a general laboratory room, a dark 
room, and a cold room. There is also a large space for storage in the 
unfinished upper half story. A greenhouse 26 by 80 feet is divided into © 
two sections, with approximately 600 square feet of bench space each. The 
shop building, 12 by 40 feet, is divided into two parts, one to be used for 
shop purposes, and the other as a storage shed for bulbs or otherwise as 
desired. The insectary is 12 by 20 feet in size. Approximately an acre of 
ground is available for field tests. 

