14 NEW YORK STATE MUSEUM 



Station 23. June 29 numerous Borborids, Limosina sp., were 

 observed in the mackerel kit containing untreated horse man- 

 ure, undoubtedly issuing from this and spreading from the 

 check to the adjacent sterilized manure. July 23d the sur- 

 face of the manure was rather dry and both pails were in 

 nearly the same mechanical condition. The manure w^as wa- 

 tered July loth and the 13th, only a few flies being observed 

 on these dates. July 17 the conditions at station 23 were 

 nearly the same as at station 6 though smiall flies were not 

 so numerous and on the 21st flies were miuch less abundant 

 than at station 6. August 23 this pail contained numerous 

 small flies and larvae though none of M u s c a do^mestica. 

 The manure was well rotted and wet. The check pail Avas 

 practically in the same condition. September 11 there were 

 numerous Sciaras on the surface of the manure -and a few 

 small Cecidomyiid larvae ; the manure was quite wet, rather well 

 rotted and the pail only about half full. The check was in 

 nearly the same condition. September 26 Psychodids were 

 rather numerous. 



The new pail contained young mushrooms August 23 and 

 there were a few small flies on the surface of the manure. 

 September 11 there were several Muscid larvae, some Sciara 

 larvae and a few small Cecidomyiid larvae in the manure. Sciara 

 adults were numerous. The pail contents w^ere nearly satu- 

 rated and but slightly rotted. September 27 P s y c h o d a 

 alter nata adults were rather abundant. 



Station 6. One house fly was observed on the manure June 29 

 and several nearly full grown maggots were found some 4 inches 

 below the surface July 8. The contents of the pail were wet July 

 loth and 13th and numerous small flies and 5 or 6 house flies were 

 observed on or about the manure on July 17th, shortly after some 

 swill consisting of orange peelings, vegetable parings, biscuit etc. 

 had been placed near by. July 21 numerous specimens of Dro- 

 s o p h i 1 a a m p e 1 o p h i 1 a were seen flying in the vicinity of 

 the manure, alighting upon the swill, crawling upon adjacent walls 

 and hovering in the upper section of this part of the house. They 

 also spread somewhat to station 8 but none were observed in the 

 vicinity of stations 18 and 12. These insects were undoubtedly 

 attracted in large measure by the swill, since they were much less 

 numerous at station 23 though somewhat abundant. August 3 house 

 flies were entering freely, going back to station 6 and spreading a 

 little on one side to station 8. The manure was inhabited by many 



