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Solvent 
Chloroform 
Ether 
Methyl 
alcohol 
Ethyl 
alcohol 
Hot water 
Cold water 
Kerosene 
Gasoline 
Solubility 
of quassiin 
Readily soluble 
Not soluble 
Readily soluble 
Solvent Solubility of Quassiin 
Sparingly soluble 
(1:1200) 
Not soluble 
Carbon " " 
tetrachloride 
Benzine " " 
Turpentine Possibly soluble 
Potassium Readily soluble 
hydroxide yellow 
solution 
Sodium hydroxide 
solution 
Calcium hydroxide 
solution 
Potassium cyanide 
solution 
Sodium carbonate 
solution 
Hydrocyanic acid 
solution 
Ammonium hydrate 
solution 
Whale oil soap 
(alk) solution 
Sodium chloride 
solution 
Hydrochloric 
acid solution 
Sulphuric acid 
solution 
Nitric acid solution 
Acetic acid solution 
Readily 
soluble 
Yellow 
solution 
Appar^tly insoluble 
Tests to compare the insecticidal action of quassiin with that 
of nicotine sulphate upon the hop aphis ( Phorodo n humuli Schrank) 
and the prune aphis ( Hyalopterus pruni Fab.) , in which soap bark 
(2 pounds to 100 gallons was used as a spreader, showed that quassiin 
used at the rate of 0,4 g. to 2,000 cc. was almost as effective as 
nicotine sulphate at the same concentration, and that quassiin at the 
rate of 0.4 g. to 1,000 cc. was fully as effective, killing practi- 
cally 100 percent of the insects. 
A formula is suggested for a spray which contains 3 poxmds of 
quassia chips (0.75 percent quassiin) and 3 pounds of whale-oil soap 
to 100 gallons. 
PATRIS, J. B. 
SUR L'HISTOIRE NATURELLE ET M^DICALE DU CASSIE. 
Hist. Nat. et Arts 9: 140-144. 1777. 
(90) 
Jour. Phys. , Chim, 
"Cassie" was introduced from Surinam into Cayenne, where it is 
cultivated. The plant is described and the author states that, 
whereas he at first considered it a species of Simarouba, he now 
knows it to belong to a new genus and he gives the following 
description of this "first known species": "Quassia pontaphylla, 
pediculis alatis, floribus racemosis, terrainalibus , coccineis 
fructu penta spermo. J. B. Pat." 
