CHAPTER IV. 
FUNGI. 
JA TURE is a perpetually revolving pano- 
rama. No sooner does she withdraw one 
object from our admiring gaze, than she 
immediately places another as interesting or as 
beautiful in its room. In watching the progress 
of vegetation especially, as month after month it 
unfolds before us, we are struck with the regularity 
with which each species of plant visits us in its own 
appointed time. So remarkably constant are the 
same plants to their appointed seasons, that their 
appearance might be regarded as a kind of floral 
calendar, indicating the various periods of the 
year. This regularity is not confined to the 
highest tribes of plants, but is equally observable 
in the very humblest. The smallest and most ob- 
