First Excursion, Saturday, May 27th. 
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May, 18 gj, 

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Volume VII. No. 2. 
1 
The Beaver (Castor Canadensis, KuhlJ. 
Page 
Notes on Canadian Bryology 17 
The Air of Our Houses 24 
Excursion No. 1 to La Peche 32 
OTTAWA, CANADA: 
1'aynter & Co., Printers, 48 Rideau Street. 
Issued April 2gth, i8gj. 
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Published Monthly at $1.00 per annum. 
