56 



DECIDUOUS FKUIT INSECTS AND INSECTICIDES. 



Table LVII. — Length of incubation of the second brood of eggs, and average tempera- 

 ture during incubation, Douglas, Mich., 1911. 







Date of — 



Duration of— 



1 

 Average 



No. of 



Num- 

















obser- 

 vation. 



ber of 

 eggs. 



Egg dep- 



Appear- 

 ance of 

 red ring. 



Appear- 

 ance of 



Hatch- 



Red 



Black 



Incu- 



mean 

 tempera- 

 ture. 







osition. 



black 

 spot. 



ing. 



ring. 



spot. 



bation. 















Days. 



Days. 



Days. 



°F. 



1 



18 



July 14 



July 18 



July 20 



July 22 



4 



6 



8 



66.96 



2 



23 



July 15 



July 19 



July. 21 



July 23 



4 



6 



8 



66.83 



3 



35 



July 17 



July 21 



July 23 



Julv 24 



4 



6 



7 



66.00 



4 



59 



July 18 



July 23 



Julv 25 



July 28 



5 



7 



10 



64. 60 



5 



67 



Julv 19 



July 24 



Julv 27 



...do.... 



5 



8 



9 



64.18 



6 



15 



...do.... 



...do 



...do 



July 29 



5 



8 



10 



64.67 



7 



64 



Julv 20 



Julv 26 



Julv 28 



...do 



6 



8 



9 



64. 35 



8 



8 



...do.... 



...do 



...do 



Julv 30 



6 



8 



io ■ 



64. 73 



9 



5 



Julv 22 



July 27 



July 29 



July 31 



5 



7 



9 



65. 41 



10 



8 



...do.... 



...do 



...do.... 



Aug. 1 



5 



7 



10 



66.47 



. 11 



27 



Julv 23 



Julv 28 



Julv 30 



July 31 



5 



7 



8 



65. 09 



12 



25 



...do.... 



...do 



July 31 



Aug. 1 



5 



8 



9 



66. 30 



13 



15 



July 24 



July 29 



...do 



...do 



5 



7 



8 



66. 63 



14 



17 



July 26 



July 31 



Aug. 1 



Aug. 2 



5 



6 



7 



69. 20 



15 



12 



July 27 



...do.... 



...do 



...do.... 



4 



5 



6 



70. 33 



16 



4 



...do.... 



...do.... 



...do.... 



Aug. 3 



4 



5 



7 



69.76 



17 



12 



July 28 



July 30 



Aug. 2 



...do 



2 



5 



6 



70.70 



18 



4 



...do.... 



...do 



...do 



Aug. 4 



2 



5 



7 



70.08 



19 



14 



Julv 29 



Aug. 2 



Aug. 3 



...do.... 



4 



5 



6 



70.23 



20 



3 



...do 



...do 



...do.... 



Aug. 5 



4 



5 



7 



70.22 



21 



172 



July 30 



...do.... 



Aug. 4 



...do.... 



3 



5 



6 



70. 55 



22 



12 



...do 



...do.... 



...do.... 



Aug. 6 



3 



5 



7 



71.00 



23 



95 



July 31 



...do 



Aug. 5 



...do 



2 



5 



6 



70.54 



24 



30 



...do.... 



...do.... 



...do 



Aug. 7 



2 



5 



7 



71.07 



25 



46 



Aug. 1 



Aug. 3 



...do.... 



...do 



o 



4 



G 



70.25 



26 



22 



...do.... 



...do.... 



Aug. 6 



Aug. 8 



2 



5 



7 



71.22 



27 



72 



Aug. 2 



Aug. 4 



Aug. 7 



...do.... 



2 



5 







71.29 



28 



4 



...do.... 



...do.... 



...do.... 



Aug. 9 



2 



5 



7 



71.01 



29 



40 



Aug. 3 



Aug. 5 



Aug. 8 



...do.... 



2 



5 



6 



71.81 



30 



8 



...do.... 



Aug. 6 



...do 



Aug. 10 



3 



5 



7 



71.74 



31 



30 



Aug. 4 



...do.... 



Aug. 9 



Aug. 11 



2 



5 



7 



72.61 



32 



111 



Aug. 5 



Aug. 8 



Aug. 10 



...do.... 



3 



5 



6 



73.01 



33 



17 



...do.... 



Aug. 7 



...do.... 



Aug. 12 



2 



5 



7 



72.20 



34 



146 



Aug. 6 



Aug. 8 



Aug. 11 



...do.... 



2 



5 







71.95 



35 



60 



...do.... 



...do.... 



...do 



Aug. 13 



2 



5 



7 



71.00 



30 



188 



Aug. 7 



...do.... 



Aug. 12 



Aug. 14 



1 



5 



7 



69.97 



37 



18 



...do 



...do 



Aug. 13 



Aug. 15 



1 



6 



8 



70.39 



38 



309 



Aug. 8 



Aug. 11 



Aug. 14 



...do.... 



3 



6 



7 



66. 59 



39 



3 



...do.... 



...do.... 



...do.... 



Aug. 16 



3 







8 



69.47 



40 



3 



Aug. 9 



Aug. 12 



...do 



Aug. 15 



3 



5 



6 



69.47 



41 



99 



...do.... 



...do.... 



...do.... 



Aug. 16 



3 



5 



7 



69.49 



42 



13 



...do 



...do.... 



Aug. 15 



Aug. 17 



3 



6 



s 



69. 96 



43 



298 



Aug. 10 



Aug. 13 



...do 



...do.... 



3 



5 



7 



69.86 



44 



4 



...do.... 



...do.... 



...do.... 



Aug. 18 



3 



5 



8 



09.99 



45 



310 



Aug. 11 



...do.... 



Aug. 16 



Aug. 17 



2 



5 



6 



69.33 



46 



130 



...do.... 



Aug. 14 



...do 



Aug. 18 



3 



5 



7 



69.56 



47 



37 



...do.... 



...do.... 



Aug. 17 



Aug. 19 



3 



6 



8 



69.15 



48 



128 



Aug. 12 



Aug. 15 



...do 



Aug. 18 



3 



5 



6 



69. 92 



49 



37 



...do.... 



...do 



...do 



Aug. 19 



3 



5 



7 



69. 40 



50 



130 



Aug. 13 



Aug. 16 



Aug. 18 



Aug. 20 



3 



6 



7 



68.65 



51 



102 



...do.... 



...do.... 



...do.... 



Aug. 21 



3 



6 



8 



67.68 



52 



87 



Aug. 14 



Aug. 17 



Aug. 19 



...do.... 



3 



5 



7 



67.77 



53 



58 



...do.... 



...do 



Aug. 20 



Aug. 22 



3 



6 



s 



67.86 



54 



198 



Aug. 15 



...do.... 



Aug. 21 



...do.... 



2 



6 



7 



67. 07 



55 



68 



...do.... 



...do 



...do.... 



Aug. 23 



2 



6 



8 



66.85 



56 



8 



...do 



...do.... 



...do.... 



Aug. 24 



2 



6 



9 



66. OS 



57 



8 



...do.... 



...do 



Aug. 22 



Aug. 25 



2 



7 



10 



65.40 



58 



37 



Aug. 16 



Aug. 19 



Aug. 23 



Aug. 24 



3 



7 



8 



65.63 



59 



17 



...do.... 



...do.... 



...do.... 



Aug. 25 



3 



7 



9 



66. 04 



60 



27 



...do 



Aug. 20 



Aug. 24 



Aug. 26 



4 



8 



10 



64.23 



61 



8 



...do.... 



...do.... 



...do 



Aug. 27 



4 



8 



11 



64.16 



62 



21 



Aug. 17 



Aug. 19 



...do.... 



Aug. 26 



2 



7 



9 



63.22 



63 



39 



...do.... 



Aug. 20 



Aug. 25 



Aug. 27 



3 



8 



10 



63.24 



64 



40 



...do.... 



...do 



...do 



Aug. 28 



3 



8 



11 



63.72 



65 



206 



Aug. 18 



...do.... 



Aug. 20 



...do 



2 



8 



10 



62. 99 



66 



18 



...do.... 



...do 



Aug. 27 



Aug. 29 



2 



9 



11 



62.97 



67 



26 



Aug. 19 



Aug. 21 



Aug. 2S 



Aug. 30 



2 



9 



11 



62.00 



68 



4 



...do.... 



...do 



...do.... 



Aug. 31 



2 



9 



12 



61.69 



69 



119 



Aug. 21 



Aug. 23 



Aug. 30 



Sept. 1 



2 



9 



11 



61.71 



70 



28 



...do 



...do.... 



...do 



Sept. 2 



2 



9 



12 



62. 36 



71 



32 



Aug. 22 



Aug. 25 



...do.... 



Sept. 1 



3 



8 



10 



61.03 



