HOUSE-FLY INVESTIGATIONS. 517 



Salic, acid Salicj'lic acid. 



Sb.oxj'ch Antimony oxychloi-ide. 



Turp Turpentine. 



Zn.Sulp.Carbl. ... Zinc sulphocarbolate. 



dry bait dry or getting dry. 



eth liouse-flies used in experiments after they had recovered from 



being- etherized. 



f few ilies feeding on bait {i. e. abovit 3-6 flies). 



m many flies feeding on bait (z. e. most flics in cylinder). 



mst bait moist, often with liquid coming out at edges. 



(A) flies helpless but alive. 



s some flies feeding on bait (t. e. about 8-10 flies). 



X flies came at once to feed on bait. 



-7- flies did not come at once to feed. 



* flies came at once to bait, but did not staj^. 



(p) pupae {i.e. flies which had emerged from pupae placed in 



cylinder), 



(p*) Flies emerged from pupae (p), and which had been given no food 



for several hours befoi'e experimental bait fed to them, 



(p') Flies newly emerged from pupse (p). 



The index numbei's to reference number of experiments in Table II. indicate that 

 the same control was used for all the experiments with the same index, e. a. (41)2 

 (42)2, etc. ' y \ I' 



Key to Mixtures used as Baits in Experiments 

 IN Table II. 



Mixture i. = Approx. 100 c.c. casein. "^ i.,t- j , ,i . , • -, c ^ ■ i 



+ 100 c.c. brown sugar. ( ^^'""^^ together at one time and of which 

 + one banana. \ ^PP™'^" ^j^f •«• ''^'^ }J^«^^ *"V ^^^^^^ "^^P/!- 



+ water to mix into a paste ) ™*^"*' ^"^ *° "^'^'"^^ * ""^^'^l'" ^'^^ ^^^^^- 



Mixture ii. = Same as Mixture i. but of which 35 c.c. was used for the experiment, 

 (5 only) and to which 2 c.c. of 40% Formalin was added. 



Mixture iii. = 15 c.c. casein. 

 (15 only) + 15 c.c. brown sugar. 

 + 40% Formalin. " 



Mixture iv. = 15 c.c. casein. 

 (16 only) + 15 c.c. brown sugar. 

 + 10 c.c. water. 

 + 5 c.c. 40% Formalin. 

 Jfiiriwre v.= 25 c.c. casein. ^ 



+ 25 c.c. brown sugar. f Mixed separately for 



+ 25 c.c. Formalin (percentage specified in each i each experiment, 

 case). J 



J!fja-#?«"e vi. =25 c.c. casein. "^ 



+ 25 c.c. brown sugar. ^r- j i. ^ r 



+ "5 c c banana I Mixed separately for 



+ 25C.C. liquid '(percentage of Formalin, or| ^ach experiment, 

 other liquid, specified in each case). J 



Mixture vii.=25 c.c. casein. 



+ 25 c.c. brown sugar. 



+ 25 c.c. 24 % Formalin in milk {i.e. milk (not water) added to 

 make up to 24% F.). 



Jfj.i'^?ire viii. = 25 c.c. casein. ~\ Mixed separately for each experiment. The 



+ 25 c.c. brown sugar. { various substances used were dissolved in 



+ 25 c.c. banana. T 25 c.c. water, before it was added to mix- 



+ 25 c.c. water. J tares. In Controls water only was used. 



Mixture ix.=25 c.c. casein ~\ Mixed separately for each experiment. Be- 



+ 25 c.c. brown sugar. I tore the water was added to the mixture, 



+ 25 c.c. banana. f the liquid (specified in each case) was 



+ 25 c.c. water. J added to the water. 



