REPORTS OF DR. E. H. ANDERSON. [43] 



November 21. — Temperature 42° F., 6 a. m. ; 4 moths in No. 1 ; 12 dead in No. 1 ; fevr 

 dead in No. 11; 11 moths in No. 11; 7 dead in No. 7. Visited a field of fresh land 

 cotton, where the foliage was partially frost-bitten but much still fresh. Found one 

 egg, recently deposited, and some chrysalids. Few insects noticeable. Placed 7 

 chrysalids in No. 11. Sent you 3 boll worms (Heliothis), taken from tomato. 



November 22. — Temperature 42° F., 9 a. m. Raw and rain. No development. 



November 23. — Temperature 42° F., 9 a. m. Raw and rain. Moths torpid. 



November 24.— Temperature 28° F., 8 a. m. Freezing and clear. 



November'^. — Temperature 20° F., 7 a.m. Freezing and clear. Visited a field. 

 Found the plant in too unsatisfactory a state to make any examination, the effect of 

 the severe freeze of previous ni^t. 



November 26. — Temperature 30^ F., 8 a. m. Wind north. 



November 28. — Temperature 40° F., 8 a. m. Wind north. Removed 20 dead moths 

 from box No. 7. Introduced 40 chrysalids into same, brought in on 21st instant. 

 Moth in a torpid condition. 



Put up 80 chrysalids in box No. 12, brought in on 2l8t instant. Removed 4 dead moths 

 from No. 6 ; 2 moths out in No. 8 ; 20 dead moths removed from No. 5 ; 19 dead 

 from No. 4. Sprinkled dry earth one-fonrth of an inch thick over chrysalids in 

 these two boxes and replaced them on the earth. No development in boxes Nos. 9 

 and 10. 



On close examination at 1 p. m. found the moths supposed to be torpid all dead. 

 Removed 36 from No. 4 ; 2 from No. 1 ; 12 from No. 11 ; 32 from gauze bag. 

 Not a moth in any of my boxes living or dead. Temperature at 1 p. m. 64° F. 

 Moths living and in motion on the 21st, and supposed to be living for some days 

 subsequently, as they did not change their natural position, were all killed doubtless 

 by the freeze of the 25th instant. This would indicate that the moth cannot survive 

 a temperature below 15° or 20° F. 



In regard to copulation, from my observation, it is carried on most actively at twi- 

 light. When observing my vivarium by lamp-light I have witnessed no demonstra- 

 tion in that line. As eggs, however, are abundantly laid on the glass, leaves, and 

 stalks of cotton, and the wooden sides of my boxes, procreation must go on normally. 



November 29. — Brought in some chrysalids, found on Convolvulus leaves, where the 

 vine ran on a cedar tree in a cotton-field. They appear to be sound. Put np in glass 

 bottle No. 13. 



November 30. — Temperature 63° F., 8 p. m. Wind southwest. Rain. Visited a field 

 where I found chrysalids, to all appearance unaffected by recent cold weather. Sent 

 soMie of these to Professor Riley. 



December 1. — Temperature 44° F., 7 a. m. Wind north. Clear. Boxes unchanged. 



December 2. — Temperature 38° F., 7 a. m. Wind north. Clear. Boxes unchanged. 



December 3. — Temperature 56° F., 9 a. m. Cloudy. Wind north. 



December 5. — Temperature 44° F., 7 a. m. Clear. No change in boxes. 



December 6. — Temi)erature 44° F., 7 a. m. Wind south. Partly clear. 



December 7. — Temperature 44° F., 7 a. m. Wind southwest. Partly clear. 



Decemljer 8. — Temperature 42° F., 7 a. m. Cloudy. Wind north. 



December 9. — Temperature 42° F., 7 a. m. Cloudy. Wind north. 



December 10. — Temperature 42° F., 7 a. m. Clee,r. Wind north. 



December 11. — Temperature 44° F., 7 a. m. Cloudy and mist. Wind south. 



December 12. — Temperature, 55° F., 8 a.m. Wind S. Cloudy. Boxes unchanged. 



December 13. — Temperature, 62° F., 8 a.m. Wind S. Misty. Thunder at night 



December 14. — Temperature, 60° F., 8 a.m. Wind NW. Drizzling rain. 



December 15. — Temperature, 30° F., 8 a. m. Wind N. Clear. 



Z>ece??i&er 16.— Temperature, 30° F., 8 a.m. Wind N. Clear. 



December 17. — Temperature, 32° F., 8 a. m. Wind N. Clear. 



Trausferred box No. 11 to my room, where a warm temperature is maintained. 



December 18. — Temperature, 44° F.,7 a. m. Infusorial life active about sunset. 



December 19. — Temperature, 54° F., 7 a.m. Wind SE. Cloudy. Rain. 



December 20. — Temperature, 64° F.,7 a. m. Wind S. Rain. 



December 21. — Temperature, 60° F., 7a. m. Wind W. Drizzle. 



Examined my boxes closely ; chrysalids apparently sound. The temperature has not 

 been high enough to effect transformation into moth. 



December 22.— Temperature, 38° F., 8 a. m. Wind N. Clear. 



December 23. — Temperature, 35° F., 7 a.m. Wind N. Cloudy. 



December 2i. — Temperature, 37° F., 8 a. m. Wind N. Cloudy. 



Examined Mallow leaves and found Aphides living. 



December 25. — Temperature 44° F., 8 a. m. Wind SW. Cloudy 



December 26.— Temperature, 50° F., 8 a. m. Wind NW. Drizzle.- 



December 27. — Temperature, 42° F., 8 a. m. Wind W. Clear. 



December 28.— Temperature, 52° F., 8 a. m. W^ind SW. Clear. 



December 29.— Temperature, 48° F., 8 a. m. Wind N. Clear. 



