34 



BULLETIN 252, IT. S. DEPARTMENT OF AGRICULTURE. 



Table XXVIII . — Length of incubation of first-brood eggs, 



Winthrojp, Me., 1914. 



No. of ; Num- 



observa- ber of 



tion. 1 eggs. 



Date- 



Appearance of — 



Incuba- 

 tion 

 period. 



Num- 

 ber 

 dead. 



Depos- 

 ited. 



Red 

 ring. 



Black 

 spot. 



Hatched. 



Red 

 ring. 



Black 

 spot. 



1 

 2 

 3 

 4 

 5 

 6 

 7 

 8 

 9 



10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 31 

 32 

 33 

 34 

 35 

 36 

 37 

 38 

 39 

 40 

 41 

 42 

 43 

 44 

 45 

 46 

 47 

 48 

 49 

 50 

 51 

 52 

 53 

 54 

 55 

 56 

 57 

 58 

 59 

 60 

 61 

 62 

 63 

 64 

 65 



4 



3 

 15 



4 



2 

 43 



7 

 18 



2 



6 



2 

 92 

 22 

 29 

 12 

 132 

 84 

 19 



9 

 115 

 27 

 102 

 20 

 110 

 160 

 21 

 101 

 17 

 106 

 12 

 70 

 60 

 142 

 27 

 187 

 52 

 42 

 90 

 17 

 12 

 63 

 28 

 33 



9 

 3« 

 17 

 16 



6 

 57 



9 



106 



70 



13 



16 



1 

 15 



7 



16 

 12 

 89 

 23 



9 

 IS 



5 



1 



June 24 



June 25 



do.... 



June 27 

 June 2S 



July 4 

 ...do.... 



July 6 

 July 7 

 July 8 



...do 



...do 

 July 10 

 Julv 11 

 July 10 

 July 11 

 July 12 

 July 13 



...db 

 Julv 14 



...do 

 July 15 



...do 

 Julv 16 



...do 

 July 17 



...do 

 July 18 

 July 17 

 July 18 



...do 

 July 19 

 July 20 



...do 

 July 21 



...do 

 July 22 



...do 

 July 23 



...do 

 Julv 24 



...do 

 July 25 

 July 26 

 July 27 



...do 

 July 28 



...do 

 July 29 

 July 30 

 Julv 31 



...db 



Aug. 1 



...do 

 Aug. 2 



..:do 

 Aug. 3 



...do 

 Aug. 4 



...do 

 Aug. 5 



...do 

 Aug. 6 



...do 

 Aug. 7 



...do 

 Aug. 8 

 Aug. 9 



...do 

 Aug. 10 

 Aug. 11 

 Aue. 12 



Days. 

 3 

 3 



Days. 

 10 

 9 



Days. 

 12 



12 



13 



12 



11 

 9 



10 

 7 

 8 

 8 

 9 

 8 

 9 

 8 

 9 

 7 

 8 

 7 

 8 

 7 

 8 

 6 

 7 

 6 

 7 

 8 

 7 

 8 

 7 

 8 

 7 

 8 

 7 

 8 

 7 

 8 

 8 

 9 

 8 

 9 

 8 

 9 

 9 



10 

 9 



10 

 9 



10 

 8 

 9 

 9 



10 

 9 



10 

 9 



10 

 9 



10 

 8 

 9 

 9 

 8 

 8 

 8 

 7 



1 



1 



June 26 

 June 27 



July l 

 do 



June 30 

 July 2 

 July 4 



July 5 

 July 7 

 July 8 



4 

 5 

 3 



9 

 10 



7 









July 3 

 .do.... 



July 5 



July 9 



2 



6 







July 4 

 do 



July 6 



July 11 



2 



7 







July 5 

 ...do.... 



July 7 



July 12 



2 



7 





7 



July 6 

 ...do 



July 8 



July 13 



2 



7 





July 8 

 ...do 



July 11 



July 14 



3 



6 





5 



July 9 

 ...do 



July 12 



July 15 



3 



6 





July 10 

 ...do 



July 13 



July 16 



3 



6 





4 



July 11 

 ...do 



July 13 



July 16 



2 



5 





July 12 

 ...do 



July 14 



July 17 



2 



5 







...do 











July 13 

 ...do 



July 15 



July 18 



2 



5 





2 



July 14 

 ...do 



July 16 



July 20 



2 



6 





July 15 

 ...do 



July 17 



July 21 



2 



6 







July 16 

 ...do 



July 18 



July 22 



2 



6 





7 



July 17 

 ...do 



July 20 



July 23 



3 



6 



8 



July 18 

 ...do 



July 21 



July 24 



3 



6 



3 



July 19 

 ...do 



July 22 



July 25 



3 



6 





July 20 

 ...do 



July 23 



July 26 



3 



6 







July 21 

 ...do 



July 24 



July 28 



3 



7 







July 22 

 ...do 



July 25 



July 23 



3 



7 



-•- 



July 23 

 ...do 



July 26 



July 30 



3 



7 







July 24 

 ...do 



July 27 



July 31 



3 



7 







July 25 

 ...do 



July 28 



Aug. 1 



3 



7 







July 26 

 ...do 



July 29 



Aug. 3 



3 



8 







July 27 

 ...do 



July 30 



Aug. 3 



3 



7 







July 28 

 ...do 



July 31 



Aug. 4 



3 



7 







July 30 

 ...do 



Aug. 3 



Aug. 6 



4 



7 





1 



July 31 

 Aug. 1 

 Aug. 2 

 Aug. 3 

 Aug. 5 



Aug. 4 

 ...do 

 Aug. 5 

 Aug. 6 

 Aug. 8 



Aug. 7 

 Aug. 8 

 Aug. 9 

 ...do.... 

 Aug. 11 



4 

 3 

 3 

 3 

 3 



7 

 7 

 7 

 6 

 6 

















Avei 



age ... 



2.599 

 5 

 2 



6.139 

 10 

 5 



7.797 

 13 

 6 



39 



Max 



imum 









Mini 



mum 























FIRST BROOD OF LARVAE. 



Time of Thatching. — The first-brood larvae commenced to hatch 

 July 6. The last of the larvae hatched August 12. Hatching, there- 

 fore, extended for a period of slightly over one month. The maxi- 

 mum number of larvae hatched July 24. (See Table XXVIII.) 



