740 The American Naturalist. [August, 
usually force themselves on the wandering attention of the observing 
pedestrian in the wayside lanes, beside the ditches and slow brooks. 
As soft emerald clouds, or graceful streamers floating in the sluggish 
current, or resting like a green scum on the surface, they are readily 
seen and easily gathered. No collecting tools are demanded for either 
Alg: or Desmids, except a dipper of some kind, a common tin dipper 
is as good as anything, and a few bottles or other vessels to carry the 
treasures home, and to keep them concealed from inquisitive people; 
the collecting naturalist must always be prepared for meeting with 
such persons." 
