416 



range of any individual organism found on the pond. The A. 0. U. check 

 list, 1910, gives its range as : North America in general, but chiefly the 

 Eastern Province north to Alaska and south to West Indies and northern 

 South America ; breeds from northern United States northward. 



It is altogether probable that other water birds visit this pond. I have 

 seen various species of ducks and sand pipers on similar ponds in this 

 region. On the water works reservoir, a small artificial lake about three 

 miles distant, ducks, loons, grebes, etc., may be seen almost any time 

 during their migration period. McAtee ("05) lists 44 water birds from 

 this region, 20 of which he marks as regular migrants. 

 Agelaius phoeniceus Linnaeus. 



Red winged blackbirds were first seen on the pond ^May 5. 1909. Two 

 pairs nested during the summer of 1909 on the south part of the pond. 

 The nests were attached to the Typha stems over the water. Three pairs 

 nested near the same place in the pond in 1910. 



Many other birds were seen near the pond or perched on the Typha 

 stems. The most common of these were: Turtle Dove, Zenaiduro ma- 

 croura L. ; Quail. CoUuiis virginianus L.; Tree sparrow, Spizella monticola 

 Gmelin ; Fox sparrow, PassereUa iliaca Merretn : Field sparrow, Spizella 

 piisiUa Wilson : .Junco. Junco hiiemalis L. • 



FLOKA. 



Alga; — 

 Closterium dianas Ehrenberg. 



April 1. 1910. Common among filamentous algiP. 

 Cosmarium botrytis Menegh. 



Common, spring 1910. 

 C. tetraophthalmum Kuetzing. 



Rare. 

 Docidium crenulatum Rabenhorst. 



This and other siiecies of this genus occurred sparingly in most col- 

 lections. 

 Spirogyra majuscula Kiietzing. 



During the winter of 1909-10. This alga developed in considerable 

 quantity in the southern part of the pond. 

 Zygnema stetlum Agardh. 



