-11- 
Psoroptes sp . 
Sarcoptes sp • 
Wille et al. ( 167 ) , of the Agricultural Experiment Station at Lime, Peru, 
in 1937 published' an account of the use of cube in dins against Sarcoptes sp, 
on sheep and. against a snecies of Psoroptes on alpaca in Peru. The effective 
concentrations of ground root (85 percent passed a sieve of 0.074 mm. mesh) 
containing 6.8 percent of rotenone, and of extract containing 5.5 percent of 
rotenone, were 1:1,000 and 1:5,000, respectively, for Sarcoptes sp. and 
P soroptes sp. The ground root end the extract "ere equally effective and rere 
in no way inferior to other dips. 
Sarcoptes scebiei (Peg.), the itch mite 
Gotze (68) in 1933 reported that Derrilavol, India-Rotenon-Losung and 
Indie-Gesantextrekt-Lo'sung, both at the rate of 20 cc. to 1 liter of cold 
2. 5-percent- soap solution, and India-sine-Hotenone-rLosung containing the 
extracted substances from derris root, with the exception, of rotenone, and 
used at 20 cc. and 60 cc. per liter of soap solution, nroved very successful 
in curing mange of cattle caused by the mite ( Acerus bubelus ) Sarcoptes scebie i 
(Beg.)- 
Scheiner ( 133 ) in 1934 found that Berrisol (3 percent rotenone) was more 
effective than Panderran (5 percent rotenone) , when used in water solutions 
in simple washes to control sercoptic mange of cattle caused by " Acerus bubalus ." 
Both were 100 percent effective if used in sufficiently strong solution (up to 
10 percent in water) , although as many as eight washes "/ere required for 
stubborn ca.ses of sercoptic mange. 
BeBussy et al. (18) in 1936 reported that this mite was effectively con- 
trolled by derris preparations. 
Thomas end Miller ( 145 ) in 1940 reported thet rotenone in the form of 
1- or 2-percent lotions with e bese similar to thet of meny hend lotions (quince 
seed, Irish moss) produced prompt cure of scabies in 24 unselected cases 
encountered in clinic end institutional practice. At the time treatments were 
begun, 6 of these patients presented most severe secondary pustular and 
dermatitic complications. The preparation is nonobjectionable from the stand- 
point of odor, is nonirriteting, even to sensitive skins, does not stain bed- 
clothes or underwear, and the patient is not conscious of its presence on the 
body. The lotion was made as follows: Rotenone dissolved in chloroform (l gm. 
to 3 cc.) was added with vigorous shaking to the quince seed. and Irish moss 
mucilage in the proportion desired to make either a 1- or a 2-percent lotion. 
The mucilage contains 0.1 percent of sodium benzoate as a preservative. Perfume 
may be added. 
Sarcoptes spp. 
See Wille et al. ( 167 ) under Psoroptes sp. on page 11. 
Weinrich (166) in 19^3 reported thet derris preparations made by the 
