- 3 - 



111 England, tests are now being made on heat treatments witli apples. 

 This is being done primarily to control gloeosporium rots, but heat 

 treatments can also reduce scald. Hot water dips (113° F, for 6 minutes) 

 were found to be effective in controlling rots, but since they involved 

 some serious handling problems, hot air treatments are now being tested. 



Heat treatments have been tested on numerous commodities, frequently 

 with success. Adaptation of laboratory tests to field conditions are 

 few, however. Nevertheless, the use of heat treatments for post-harvest 

 disease control may hold much promise for the future. 



A************** 



A USEFUL TOY 



G. David Blanpied 

 Department of Pomology - Cornell University 



During one of the discussion periods at the 1964 CA Seminar, one 

 of the growers expressed interest in a toy listening device for detect- 

 ing leaks in CA rooms. This toy, which is a sound -magnifying device 

 available from a well-known mail order house, is advertised as a spying 

 device for listening to distant conversations. We purchased one of 

 these toys and found that it was of some value in detecting leaks in CA 

 rooms. One cannot use the device to locate leaks at great distances. 

 It cannot be used to detect leaks which cannot be heard by unaided ear, 

 but it is useful for quick scanning of joints, pipe and conduit exits, 

 door seals, etc. It simply speeds up the location of leaks which nor- 

 mally require the listener to pass his caulky ear 2 Inches from every 

 nail hole in the room. It's easier to pass your hand than your ear over 

 all those possible sources of leaks. The listening device allows you 

 to put your ear in your hand. 



*************** 



CA STORAGE IN MICHIGAN 



Williajn J. Lord 

 Department of Plant and Soil Sciences 



While visiting the apple industry in Michigan last March, the fol- 

 lowing notes on CA storage were made and may be of interest to others. 



Contrary to CA storages in New England, galvanized sheets commonly 

 were used to obtain a gas seal and the majority of rooms seen were water 

 scrubbed. Lime was being used to supplement water scrubbing, however. 

 Since most CA rooms in Michigan are water scrubbed, a smaller percentage 



