THE SENSE REACTIONS OF FLIES. 



145 



Table III. 

 Comparison of the results of offering various baits to different species of flies. 



Explanation. 

 1=1-9 per cent, of the flies feeding when counted. 



2 = 10-19 





j» 



>t 









3 = 20-29 



99 



f 









4 = 30-39 



»» 



;. 









5 = 40-49 



»» 



» 









6 = 50-59 



»» 



53 









7 = 60-69 



5> 



S 









8 = 70-79 



J» 



>J 









9 = 80-89 



» 



9 









10 = 90-100 



)) 



*J 









A dash indicates that no 



test was 



made. 









Bait. 



Musca. 



Colli- 

 phora. 



Lucilia. 



Phormia 



Sarc.o- 

 phaga. 



Fannia. 



Potassium iodide 



2 











. 







, 



,, alum 



1 



— 



— 



— 



— ■ 



— 



„ sulphate . . 



2 



— 



— ■ 



— ■ 



— 



— - 



„ ferrocyanide 







— 



— 



— ■ 



— ■ 



— 



„ chlorate 



many 



— 



— - 



— . 



— 



— 



„ permanganate 



many 



— 



_ 



— ■ 



■ — • 



■ — ■ 



,, metabisulphite 



o' 



1 



. 1 



1 







1 



Control bait 



many 



— . 





— 



— ■ 



— 



Sodium sulphite 



2' 



— 



— . 



— . 



2 



1 



„ iodate . . 



many 



— 



— 



— 



— : 



— 



,, sulphate 



many 



— 



— 



— 







— 



acid phosphate 



1 



— ■ 



— - 



— ■ 







— - 



„ phosphate 



1 



— 



— 



— 



■ — ■ 



— 



,, chloride 



few 



— 



— . 



— 







— 



Pyrethrum extract 



2 



7 



3 



2 



2 



1 



Aqueous skatol soln. 



1 



3 



1 



1 



3 







Amyl. acetate 







1 



1 











1 



Artificial milk 



1 







— 



3 







1 



Nicotine (1 per cent.) 



4 



1 



1 



3 











Balsam of Peru 



1 























Cannabis indica 



1 















1 







Controls 



2 



— 



— 



— 



— . 



. — . 



Valeric acid 







— 



— 



— 



— 



— 



Ammonium butyrate 















— 



— 



— 



Ammonia 



— . 



2 



1 



8 



3 







Ammonium nitrate 



1 



1 



1 



1 







1 



Ammonia + honey 



5 



— 



— . 



— . 



— 



— ■ 



Boric acid 



1 



— . 



— 



— 



— 



— 



Methylene blue + honey 



4 



— 



— 



— 



— 



— 



Cochineal + honey 



2 



— 



— 



— 



— 



— 



Water + honey 



5 



— ■ 



— 



— 



— 



— 



Thiosinamine -j- honey 



1 



— ■ 



— 



— 



— 



— 



Aniline hydrochloride 







— - 



— 



— ■ 



— 



— 



£ Naphthol on filter paper . . 



1 



2 



— 



— ■ 



— 



— 



Piperozine on filter paper 







1 



— 



— 



— 







Ammonium sulphocyanide . . 



0-5 



— ■ 



— 



— 



— ■ 



— 



,, tartrate . . 



2 



— 



— • 



— 



— 



— 



„ alum 



3 



— 



— . 



— 



— 



— 



„ carbonate 



5 



— - 



— 



— 



— 



— ■ 



,, sulphate . . 



1 



— 







— 



~ 







