THIRTY-FIFTH ANNUAL CONVENTION. 253 



usual rate for thrashing wheat and oats being from 1,000 to 

 1,200 revolutions per minute.) In order not to reduce the rate 

 of movement of the rest of the machine it is necessary to in- 

 crease the size of the pulleys that run the feeder, fanning 

 riddles, cleaning pans, wind stacker, etc. The pulleys were 

 changed as follows : Feeder, from 5^ inches to 12 inches ; 

 crank-shaft, which runs the riddles, shaker, grain pan, etc., 

 from 5j/2 to 12 inches ; wind stacker, from 7 to 12 inches. By 

 these adjustments the speed of the separator, except the cyl- 

 inder, was maintained. All of the cylinder teeth and two rows 

 of concaves were left in the machine, for when any of these 

 were taken out the peas were not thrashed clean. The above 

 changes are included in the regular attachment furnishd by 

 the company. It was found, however, that the peas were split 

 badly with the machine thus adjusted, and we were not able to 

 do satisfactory work until Mr. Howard observed that most of 

 the peas were cracked in passing through the grating of iron 

 bars directly behind the cylinder. This grating was removed 

 and replaced by No. 8 wire strung from two to three inches 

 apart and attached at the top and bottom to the bars that origi- 

 nally held the grating. With this adjustment we are able to 

 thrash cow-peas successfully with our Avery separator. 



Storing Cow-Pea Seed. 



Cow-pea seed can be stored for considerable time in this cli- 

 mate without much danger of loss of vitality. The soy-bean 

 is difficult to keep in storage in large quantities, as the seed fre- 

 quently heats badly. However, this is not the case with the 

 cow-pea, and there is little danger of heating if the peas are 

 sufficiently cured in the mow or stack before thrashing. Cow- 

 pea seed, however, is subject to attack from insects, and espe- 

 cially from the cow-pea weevil, a beetle dark brown in color 

 and about one- fifth of an inch long, that lays its eggs upon the 

 newly-formed pods in the field. These eggs hatch and the larva 

 eats through the pod and enters the nearest pea. The insect 

 usually lives within the pea until after the pea is thrashed and 



