470 



MISS W. H. SAUNDERS ON THE 



Tlie Application of Maggot Foisons. 



The following liquids miscible in water were used : — 



Miscible Tetraclilorethane (Westoran). 

 Miscible Fnsel oil 1 %. 

 Pyridene 10 7„. 



M II 5 7o- 



Soluble Tar oil. 

 Higliei- .P3'ridene bases. 

 Neutral Blast-furnace oil. 

 Miscible oil, Heavy. 

 „ „ Light. 



Methods. 



1. Several small heaps, each of 10 cubic feet, were treated with 

 Westoran and Miscible Fusel oil. Each heap was 1 foot high 

 on a soil foundation, which was covered Avith peat- moss litter. 



Results on the 3rd daj'. 



Miscible Fusel 

 Oil, 1 %. 



1 07.. diluted to 40 ozs. 



2 ozs. „ „ 



4 ozs. „ „ 

 1 oz. „ „ 



3 ozs. „ „ 



5 ozs. „ ,, 



Westoran 

 Alive. 



1. One quart of 



solution 

 mixed inti- 

 matelj' with 

 the manure. 



2. Maggots put 



at 5 from 

 the bottom, 

 one quart 

 of liquid 

 poured on 

 at f. 



3. Control 



2. Typical span-shaped manure-heaps 

 feet treated wath Westoran and Miscible 



Alive. 



Escaped. 



Dead. 



1 quart of solu- 

 tion to every 

 10 cubic feet 

 of manure. 



Maggots put in 

 thi'ee positions. 



The liquid was 

 sprayed on as 

 the heap was 

 made up. 



Westoran. 

 In the strength of 2 ozs. 

 in 40 ozs. water (o^/o). 



Escaped. 



of 220 and 110 cubic 

 Fusel oil respectively. 



Miscible Fnsel Oil, 1 o/q. 

 In the strength of 4 ozs. 

 in 40 ozs. water (10 "/n). 



Results. 



In 24 hours maggots in 

 the centre dead ; 

 maggots near the top 

 pupated ; maggots at 

 the bottom, near the 

 edge, alive. 



3. 5-foot cubes of manure (125 cubic 

 AVestoran, Miscible Pyridene, Kerosene, 

 and Cresol. 



In 24 hours maggots all 



living. 

 Third day some living, 



others pupated. 

 Fifth day all dead. 



feet) were treated with 

 higher Pyridene bases. 



