eyes 
Dr. Floyd F. Smith of the greenhouse-insect laboratory, Washington, 
D. C., has undertaken a comprehensive study of the cyclamen mite, and has 
Ilready added a number of new hosts. He has found two species of mites 
involved. Good control has been obtained by hot water treatment and 
these experiments are being extended. 
C. P. Clausen, of the Kuala Lumpur laboratory in the Federated 
Malay States, who has handled the collection and transportation of para— 
sites of the citrus black fly, has terminated that phase of the work. 
Reports by P. A. Berry, of the insectary in Cuba, as well as observations 
by Mr. Clausen since his arrival in Cuba, show that parasite control is 
being rapidly established in that island. Supplies of parasites have been 
shipped to Panama and to Haiti. 
James Zetek, of the Canal Zone laboratory, has submitted a full 
report on his study of the coconut situation on San Andres Island. The 
critical situation existing there due to scale has been brought about 
by a number of circumstances, including the drought. Predatory insects 
were found to be active, especially in the moister areas. 
W. W. Yothers, of the laboratory at Orlando, Fla., has submitted 
a report on work done by himself and A. C. Mason in Hawaii, covering the 
use of high temperatures in the control of pineapple mealybugs. Later 
experiments conducted by the present staff in Hawaii have confirmed the 
vapor method as promising in this field. Mr. Yothers has finished a 
report covering his intensive search for the Mediterranean fruit fly in 
Orlando by holding fruit. Results were entirely negative. 
Mr. Yothers has also submitted three completed reports by himself 
and A. C. Mason, one dealing with relative infestation of fruits in 
Hawaii by the Mediterranean fruit fly, another covering experiments in 
connection with the infestation of citrus fruit by the fly, especially 
in relation to the condition of the oil cells, and a third covering the 
rate of development of larvae of the fly in different fruits. This last 
report gives charts and data on the daily percentage of emergence on 
successive days after egg laying in the different fruits. 
D. H. Nicholson, formerly engaged on the ecological staff at 
Orlando, Fla., has just submitted an extensive report on the native 
Trypetidae of Florida. This report marks the completion of one of the 
projects undertaken during the fruit fly campaign. It contains many 
new data in insects in this group. 
Dr. R. L. Miller and I. P. Bassett, of the Orlando laboratory, have 
completed a report on the effect of copper and arsenical spray mixtures 
on citrus fruit and on the catalase activity of the leaves. The report 
covers work planned during the fruit fly campaign and gives a series 
of charts showing the relations between the quantities used and the 
citric acid, the soluble solids, the solids — acid ratio, the pH of the 
fruits, the catalase activity of the leaves, etc. 
