NATURE'S CALENDAR 



method of spending the winter as pupae 

 in the burrows they dug and used as traps 

 and retreats when they were in the fierce 

 ^rub stage. A good many chrysaHds, 

 especially of the smaller beetles, hiber- 

 nate among the shreds of rotten stumps 

 and logs, or beneath the loose old bark 

 of trees, and in crevices about fences and 

 houses; while the infant moths and but- 

 terflies are safely wrapped in warm co- 

 coons, which are stowed away in all sorts 

 of snug corners, or glued to the bark of 

 trees, or on the sheltered sides of stones, 

 logs, fence rails, etc., or else hung, like 

 cradles, to the stems of their favorite 

 plants. This, therefore, is a good season 

 to gather cocoons, allow them to develop 

 in captivity, and study the process. 



This ends the list of invertebrates, and 

 we are now ready, during the continued 

 cold weather of February, to study how 

 the higher, vertebrated animals care for 

 themselves in winter. 



January 20 



January 21 



