128 ROCHESTER ACADEMY OF SCIENCE. [Jan: 2, 
Hill's account, John Briggen, a tenant of his, while waiting for his 
horse to drink at a small stream, saw on the opposite side about twenty- 
five to thirty little red animals of different sizes. This army of weasels 
as it turned out to be, advanced across the stream and climbed up the 
legs of both man and horse. They were only driven off by consider- 
able effort on the part of the man and by the assistance of his dog 
coming to the rescue. Mr. Hill concludes that these weasels were 
probably traveling, and states that he on a previous occasion saw as 
many as fifteen together, and last summer he also killed a large one 
that had chased and frightened a little boy. Mr. Geo. H. Harris is 
also cited as having been once attacked by a weasel. 
In discussion of Mr. Hill’s letter Prof. Henry A. Ward related a 
number of cases of other animals, which occasionally travel in large 
numbers and which are at such times very aggressive. 
At the meeting of May 14, 1890, the scientific topic of the evening 
was on Chlamyphorus by Mr. Chas. H. Ward, who gave an account 
of the classification and place of the Chlamyphori, and explained in 
detail the structure of these animals. Mr. Ward exhibited several 
mounted specimens of the Armadillos. Among them a fine specimen 
of the Peba, the only Armadillo found in the United States. 
Mounted specimens of Sloths were also exhibited, as for instance 
the Chevelepus Hoffmani, distinguished by wearing a covering of green 
Algz when found. It was stated by Prof Henry A. Ward that nearly 
all the Sloths carried similar parasitic growths of Alge. 
Pulmonary Gastropods were the subject for discussion at the 
meeting of May 28, 1890, presented by Mr. S. G. Crump, who discussed 
the subject with reference to a collection from the Philipptne Islands. 
Prof. Henry A. Ward also exhibited and described a collection of 
snails from Lake Tanganyika. 
At the meeting of June 11, 1890, Prof. Henry A. Ward took as a 
topic the sperm whale, and discussed it in all its phases, with a large 
amount of illustrative material. 
No further meetings were held until Oct. 13, 1890, at which time 
Mr. Geo. W. Rafter, discussed the Entomostraca of the vicinity of 
Rochester, exhibiting a number of photomicrographs of the same, and 
mounted objects under the microscope. 
- At the meeting of Dec. 10, 1890, Mr. Frank C. Baker discussed 
the Digestive System of the Mollusca, illustrating the topic by charts, 
microscopic mounts and a collection of shells. 
The foregoing comprises the more important work of the Section 
during the year. Although a number of other topics have at different 
