182 THE MOSS-ANIMALS, 
Fredericella and most of the Plumatelle. In the United 
States, Lophopus is very rare, only one specimen having 
been found in the Schuylkill River, near Philadelphia. 
In England, it is abundant upon the stems of floating 
duck-weed (Lemna) and other fresh-water plants. 
My first introduction to Pectinatella and Cristatella took 
place some years since at Pennissewasse Pond, in Maine, 
one of the smallest of the liquid gems adorning that State. 
Induced by the representations of a scientific friend, I 
visited the pond late in September, and its unexpected 
treasures kept me a willing loiterer for several succeeding 
weeks. The season was charming, full of haze and color, 
with an occasional leaf drifting through the still air, to re- 
mind one that the funeral cortege of the summer was pass- 
ing down the year. Our way to the pond led us through 
a tortuous, shallow channel, studded with the blackened 
trunks of trees, the remains of a grove that had once 
overshadowed the spot where we now floated. I learned 
that earlier in the season this channel was much deeper, 
wholly submerging the shattered stumps, which were 
covered by luxuriant growths of Pectinatelle, hanging 
over them like ivy over ruined towers. At this season, 
however, they were bare, the Polyzoa having sought the 
cooler depths of the pond. 
Passing under a picturesque bridge, we entered the 
main lake, a long expanse with undulating shores, more 
like a a river than a lake. One could readily imagine it 
on to the distant hills, closing the view to the 
northward, and the old logs which here and there lifted 
their sun-baked heads abeve the autumnal-tinted waters, 
half reclining with the current, added another river-like 
feature to the scene. We selected the oldest of these as 
most likely to furnish us with the objects of our search. 
