1908] Notes on Silurian Stromatoporoids 29 



Tangential sections show numerous round holes — the cross 

 sections of the zooidal pores. These are about one-fourteenth 

 of a mm. in diameter, and are separated by somewhat greater 

 intervals. Occasionally the pores are placed in communication 

 with one another, so as to form horse-shoe shaped loops, and 

 although astrorhizal canals can be observed, they are very 

 inconspicuous. Owing to the curvature of the laminae a con- 

 centric arrangement is exhibited by transverse sections. 



Stromatopora wilsoni resembles 5. carteri in its manner of 

 growth and in its feebly developed astrorhizal systems, and 

 differs from that species in its finer grain and in the greater 

 persistence of its horizontal elements. From 5. constellata it is 

 distinguished by its botryoidal manner of growth, the character 

 of the surface, and the feeble astrorhizae. 



Locality. — Pagwachuan River near mouth, W. J. Wilson, 

 July, 1904. 



Stromatopora, c/. indianensis. Parks. 



A minute example of a coarse type of true Stromatopora 

 is possibly referable to this species. 



Locality. — Little Current River, Station 67, W. J. Wilson, 

 July, 1903. 



Stromatopora, sp. indet. 



Encrusting on specimens of Pycnostylus, forming "potato- 

 like masses" about 6 cm. by 4 cm. Surface smooth. Structure 

 very fine and compact but too much altered to warrant de- 

 scription. Appears to be closer to 5. antiqua, Nich., than to 

 any other species. 



Localities. — Nagagami River, Station 107, W. J. Wilson, 

 June, 1903; Drowning River, 362 miles from mouth, O. O'vSul- 

 livan, August, 1903. 



Besides the above the collection contains specimens from 

 the Drowning River, from the Nagagami River and from Cor- 

 morant Lake, in all of which the fibre is destroyed entirely 

 beyond identification. 



BIRD NOTES FROM GALT, ONT. 



The most striking thing about our bird life since the begin- 

 ning of the year has been its gxtreme scarcity. I have no re- 

 membrance of such a small variety of birds wintering with us, 

 as has been the case this winter, and I have been through the 

 woods and sv/amps a ;:rea-t deal snowshoeing. From January 

 1st to March 7th I never saw a single crow, the first time I can 

 remember their entire absence, but jays were very plentiful. 

 Outside of our regular winter residents, such as chickadees. 



