36 



Texas Agricultural Experiment Station 



thermograph was placed inside the incubator and the records of the 

 temperature and the humidity maintained in the experiments are shown 

 in table 24. 



Tho eggs were deposited by the moths in cages in the laboratory and 

 the following morning they were placed in the incubator. The larvae 

 were supplied with ample food in the form of fresh cappings. The 

 larvae that hatched in a twenty-four hour period were kept together. 



The results of this experiment are shown in table 33. The eggs of 

 one batch were placed in the incubator over a period of one day. After 

 the first twenty-four hour period, the hatching was very slow, only 

 four to six larvae froni a batch. The prolonged exposure in the in- 

 cubator dried the eggs badly and after a short time the eggs would not 

 hatch. The larvae started their work in the normal manner but this 

 condition was soon changed. 



Table 23 — Effect of humidity on development. 



Eggs deposited. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Doc. 9 



Dec. 9 



Dec. 9 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. 



Dec. _ 



Dec. 11 



Dec. 11 



Dec. 11 



Dec. 11 



Dec. 11 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912.. . 



1912 



1912... 



1912 



1912 



1912.... 



1912 



1912.. . 

 1912... 



•1912 



1912 



1912 



1912.... 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



1912 



Egos hatched. 



Dec. 

 Dee. 

 Dec. 



13, 1912 



15, 1912 



16, 1912 



Dec. 



Bee. 

 ec. 

 Dec. 

 Dec. 

 Dec. 

 Dec. 

 Dec. 



16, 1912 



16, 1912 



17, 1912 

 IS, 1912 



19, 1912 



20, 1912 



22, 1912 



23, 1912 



Dec. 

 Dec. 

 Dec. 

 Dec. 



17, 1912 



16, 1912 



17, 1912 



18, 1912 



Dec. 

 Dec. 

 Dec. 

 Dec. 

 Dec. 

 Dec. 

 Dec. 

 Dec. 



2r,, 1912 



24, 1912 



24, 1912 



26. 1912 



12, 1912 



16, 1912 



17, 1912 



18, 1912 



Dec. 

 Dec. 

 Dec. 

 Dec. 

 Dec. 



23, 1912 



24, 1912 

 2'5, 1912 

 26. 1912 

 28, 1912 



Larvae died. 



Mar. 24, 

 April 12, 

 Mar. 5. 



1913 

 1913 

 1913 



April 5 , 

 Mar. 24, 

 April 12, 

 Mar. 24, 

 April 5 , 

 Mar. 24, 

 April 12, 

 Mar. 15, 



1913 

 1913 

 1913 

 1913 

 1913 

 1913 

 1913 

 1913 



Mar. 24, 

 April 12, 

 Mar. 24, 

 Mar. 24, 



1913 

 1913 

 1913 

 1913 



Mar. 24, 

 Mar. 24, 

 April 5, 

 April 5, 

 April 12, 

 Dec. 31, 

 Mar. 24, 

 April 12, 



1913 

 1913 

 1913 

 1913 

 1913 

 1912 

 1913 

 1913 



Feb. 21, 

 Feb. 26, 

 Mar. 24, 

 Mar. 24, 

 Mar. 24, 



1913 

 1913 

 1913 

 1913 

 1913 



Remarks. 



Work very unnatural. 

 Variation in si^e. 

 Very little growth. 

 No eggs hatched. 

 Larva died. 



Larva one-third grown. 

 Larva one-fourth grown. 

 Larva one-fourth grown. 

 Larva one- half grown. 

 Very little work. 

 Larva one-fourth grown .. 

 Very little work. 

 No eggs hatched. 

 Larva one-third grown. 

 Very little growth. 

 Larva one-half grown. . 

 Very little growth. 

 No eggs hatched. 

 Larva one-half grown. 

 Ver\' little growth. 

 Larva two-thirds grown.. 

 Larva two-thirds grown.. 

 Larva one-third grown. 

 Very little work. 

 Larva one-third grown. 

 Larva one-half grown. 

 No eggs hatched. 

 Larva one-third grown. 

 Larva one.-third grown. 

 Larva one-third grown. 

 Larva one-third grown. 

 No eggs hatched. 

 Very little work. 

 Very little work. 

 Larva one-fourth igrown. 

 Larva one-fourth grown. 

 No eggs hatched. 

 Ver"/ little work. 

 Larva dried. 

 Larva one-third grown. 

 Very little work. 

 No eggs hatched. 

 Larva one-fourth grown _ 

 Larva one-fourth grown. 

 Very little work. 

 Ver.7 little work. 

 Larva two-thirds grown- 

 No egffs hatched. 

 Larva one-third grown. 

 Very little work. 

 Very little work. 

 Very little work. 

 Very little work. 



