494 MISS O. C. LODGE ON THE 



(M) S'abstances to lohich Flies still came, though never more than 

 about 20-30 ivere caught at each count. 



Uaijs on tohich the 

 TBaits. above numher of 



flies 'were caught. 



Casein -I- brown sugar + \v:\ter 3-4 & 7-8 



„ +white „ + „ +Alcoliol 1-2 



„ -(-golden syrup + ,, + „ 7-8 



Boiled milk 1-4 



Toasted casein -f- water 1-12 



Casein -t- bread -(- „ 4-6 



(N) Substances to which never more than about 10-20 came. 



Hays on which the 

 Halts. above number of flies were 



caught at each count. 



Golden syrup -I- alcohol 1-2 



Brown sugar -I- „ 1-2 



Casein + brown sugar + water 1-10 



„ + water 1-4 



Boiled milk -I- white sugar 1-2 



„ ,, -Hstout 1-4 



„ cheese -1- water 1-2 



Dutch „ 1-2 



(0) Substances unattractive to House-flies, and to ivhich 

 fewer than 10 flies at most came. 



Suits. Days exposed. 



Green treacle -(-bread 1-6 



Golden syrup -(- „ 1-6 



Casein + green treacle -(- bread + water 1-6 



Peptone-(- „ „ + „ + „ 1-6 



„ -(-golden syrup -(- „ + „ 1-6 



Casein + vinegar 1-6 



„ + „ -(-yeast 1-2 



„ + brown sugar + yeast + water 1-2 



„ -(- vinegar -(- yeast -(- water 1-2 



Peptone + toffee 1-4 



J, -f brown sugar -(-water 1-4 



„ + „ „ + ,> -(-yeast 1-4 



Casein -1- toffee (cooked together) 1-4 



„ + „ -hmaggots 1-4 



Toffee -(-maggots 1-4 



Casein + bread + water (at manure-heap) 1-4 



„ + yeast -(■ vinegar -(-maggots 1-4 



„ -(- brown sugar -(- water 1-8 



„ -(- golden syrup -(- „ 1-12 



Alcohol + water 1-4 



Casein + brown sugar + water 1-8 



Jam 1-1 



Casein -(-Kepler's Malt Extract -(-water 1-8 



Milk 1-8 



„ -(-brown sugar 1-8 



„ -(-Kepler's Malt Extract 1-8 



