Allen.] 192 [Decpinber2 



9 A. M.; day so cold tliat it thawed but little; began to freeze before 

 sunset. No frogs. 



"April 12tb. Three storms since last date, three to six inches of snow 

 falling in each. Heavy frosts nearly every night. H7jJa Plckeringii 

 has been heard a few times only, in the early part of evening; Rana 

 sylvatica once or twice in the middle of the day. Last night a few 

 H. Pickeringii piped nearly all night, although the ground was every- 

 where snow-covered, and melting snow was running into the marshes. 

 Temperature of the air at sunset but a few degrees 'above the freezing 

 point, but the weather moderating during the night, if is somewhat 

 warmer this morning. Temperature of the water at 8 A. M. 39°-42°. 

 Hyla silent. Day warmer than usual, and a few of the Hyla and R. 

 sylvatica heard, the former till dusk. At 7 P. M., temperature of the 

 air 31°, mud already stiffening with frost and ice forming on the pools 

 of water. The warmest water observed had a temperature of 42°, vary- 

 ing to 38°. Wind brisk from the north. A few brave H. Pick- 

 eringii — very few and widely scattered — piping faintly in ■ the 

 marshes, their heads exposed to a stiff northerly breeze at a temper- 

 ature of 31°! 



" April 13th, 1 P. M. Air 34°; running water 45°; still water 42°- 

 €2°; average of still water fairly exposed to the sun, 52°-57°. Ice 

 still on the Avater in shaded places, a few inches beneath which the 

 ■water was 42°. Shallow water (two to four inches deep) in very 

 sunny places 62°, while two yards distant and six inches deep, it was 

 57°. Wind a stiff northwest breeze; freezing in the shade. The 

 morning being very cold, the first frogs were heard at 11^ A. M. ; they 

 continued active only tiU 4 P. M. 



"April 14th. In the morning a heavy frost and some ice. H. Pick- 

 eringii and R. sylvatica out in great numbers by 10 A. M., and were 

 clamorous throughout the day ; tlie weather being warm and fine. R. 

 fontinalis and R. palustris observed for the first time. 



" April 15th. The marshes resounded all night with the notes of 

 both H. Pickeringii and R. sylvatica. Day very warm, the temperature 

 of the air reaching 70°. At 7 P. M. it was 62°, and that of the 

 running water 52°, and of Stillwater 58°; the warmest since April 

 1st. To-day Hyla Pickeringii commenced spawning. R. liahcina 

 :first taken; 7i. palusti-is out in numbers. R. sylvatica again com- 

 menced spawning, the first eggs being observed April 4th, while since 

 then the weather has been excessively cold. To-day also Bufo amer- 



