- 35 
209-2l<?° is cttranrd r.s white, odorless, crystalline needles or prisms, 
neutral, dcrtro-rot^itory, ojid pcrnr.ncnt in air. 
The principle of Surinam quassia is closely --^llied, consisting 
of a. mixture of principles, C^cH^cC-^q and ^v^'^^q^iq' -A- purified 
extranet, an ajnorphous, grajiulated, sticky powder, a yellow "brown, 
is coniicrcially known as quo-ssin, 
PICKEL, B, (93) 
DUiiS HEIAGAS DO TOMATEIEO. Chacc-ras e Q^iintacs 38(2): 14^-147. 
1928, [Abstract in Rev. Appl. Ent. (A) 16: 583. 1928.] 
A quagsia-soap spray is very efficient rgainst Corythaica 
nonacha Stal, v/hich occurs on a nunbor of species of Solanun: 
in Brazil, Attention is dra-wn to the fact that Quassia anara 
grows extensively in Brazil. 
POIRET, J. L. LI. (94) . 
E1TCYCL0P3DIS MSTHODIQUE. Botanique 5: 23-25. Paris. 1804, 
Generic characteristics of Quassi a are listed and the 
species Q, Oinara, Q. simarouba (Simarouba amara) and _^, excel sa 
( polygama ) are described. 
RIEDER, C. (95) 
UIITEESUCHLTTGEIT UBER DSl^I EIICTjUSS EIKES BITTERSTOFFES AUE 
am VORG-AITG DER PJESORPTIOIT, Arch. Expt, Path, u, Phannakol. 
63: 304-330. 1910, 
The experiments reported were carried out to show that 
bitter substances, in this instance Merck's quassin, may 
cause delayed resorption. Resorption with and without quassin 
was determined by the following methods: (1) The effect upon 
the rapidity of onset and the duration and character of symptoms 
of strychnine poisoning; (2) determination of the quantity of a 
sodium thiosulphatc solution remaining in the stomach after in- 
gestion through a stomach tube; (3) determination of the amount 
of solol excreted in the urine; (4) determination of iodine 
excreted after ingestion of potassium iodide; (5) determination, 
by x-ray examination and by the use of a duodenal fistula, of 
the speed of movement of the stomach contents into the intestine* 
The results obtained '^oy methods (l), (3), and (4) support the 
conclusion tha.t certain quantities of a, bitter substance may 
delay the movement of dissolved substances from the lumen of the 
digestive tract into the blood. The other methods did not show 
any difference between animals v/ith and without quassin. 
