- 9 - 
ful with "basic lead arsenate, calcium arsenate, 40 percent nicotine, 
Bordeaux, glyoxalidines, lime sulfur, zinc sulfate plus lime, and lime; 
and compatible with all other insecticides and fungicides. 
A mixture of chlordane 50-percent wettable powder with 4-8-8 fertil- 
izer at the rate of 2 pounds to 1000 maintained insecticidal activity for 
at least 30 days. — Kelsheimer ( 252 ). Chlordane in certain fertilizer 
mixtures remained active for 192 days. — Compton (79). 
Additional observations on the compatibility of chlordane with spray 
materials have been recorded by Marshall ( 3l6 ): and Griffiths and King 
(1221. 
The American Fruit Grower (Anon. 4, £) has published charts showing 
the weather factors in spraying and dusting fruits with insecticides. 
Chlordane is listed as safe to apply to both pome and stone fruits under 
5 weather conditions: temperature above 85°; temperature 85° to 65*i 
temperature 65° to 40°; light rain; high humidity with slow drying. 
FREIGHT CLASSIFICATION 
Beginning June 1, 1948 chlordane was shipped under a new item - 
"Polychlor Agricultural Insecticides and Fungicides' 1 in the consolidated 
freight classification. 
Polychlor is a name selected by the Classification Committee for a 
group of compounds, including DDT, benzene hexachloride, toxaphene, and 
chlordane which contain three or more chlorine atoms. This name is 
used only for shipping purposes, not for labeling. It was selected to 
avoid confusion among carriers as well as shippers over the long chemical 
names of this group of products, whose importance is increasing, and to 
avoid numerous requests for exceptions for individual products. All 
items in this group now will enjoy the same freight classification in 
their territory. Shippers should note that this new item does not cover 
the technical chemicals which should still be described as "chemicals, 
noibn"; likewise, it does not cover liquid preparations, or dry formula- 
tions in excess of 50 percent of the chlorinated chemical. Such formu- 
lations will continue to be described as "insecticides or fungicides, 
noibn". — Anon. (2). 
PATENTS 
Patents on chlordane have been granted Julius Hyman ( 231-233 ) as 
follows: 
Belgium - Patent No. 464,617 granted April 16, 1946. 
England - Patent No. 6l8,432 granted February 22, 1949. 
Mexico - Patent No. 45,398 granted March 19, 1947. 
United States -Patent No. 2,519,190 granted August 15, 1950. 
