— 100 — 



Twenty mosses were studied by the author: of these, the spores of 17 were 

 •successfully germinated. But on only 10 of these were leaf buds formed. And 

 lie remarks on this point, that "Cultures are questions which we address to Dame 

 Nature, but which she will answer us rightly only when we frame our questions 

 aright." 



Some progress is made by this investigator in the determination that the 

 period after the winter solstice seems the best suited for beginning the cultures, 

 that bud formation is favored by the light (not warmth) of high summer, that 

 •different groups of mosses have characteristic protonema, that in some species the 

 protonema is positively, in others negatively heliotropic, that germination is 

 successful only under favorable light conditions, and that agar-agar, with the 

 proper chemical nutrients added, is excellent for the pursuit of this investigation. 



John M. Holzinger, Winona, Minn,, Oct. 17, 1912. 



NOTES 



Notice — Election of Sullivant Moss Society Officers for 1913 — Send ballots 

 at once to Mrs. Mary G. Spencer, Judge of Elections, 4923 Warrington Ave., 

 Philadelphia, Pa. Polls close November 30th. President, Dr. A. W. Evans, 

 New Haven, Conn. Vice-Pres., Mr. E. B. Chamberlain, New York City. 

 Secretary, Mrs. Eva B. Gadsky, Germantown, Pa. Treasurer, Mrs. Annie 

 Morrill Smith, Brooklyn, N. Y. 



Polytricum commune is known by the name of "Black Egypt" in Exeter, 

 R. I., where it is very much disliked by the farmer as it is difficult to eradicate 

 -from his fields. 



H. B. Bailey 



EXCHANGE DEPARTMENT 



(To Society Members Only — For Postage) 

 Rev. James Hansen, St. John's University, Collegeville, Minn. — Bacidia 

 rubella (Hoffm.) Mass. and Physcia stellaria (S.) Nyl. From Collegeville, 

 Minn. 



Miss Mary F. Miller, Box 203, R. F. D. 4, Station A, Washington, D. C. — 

 Letharia vulpina (L.) Wainio. From Switzerland. Collected by the Rev. 

 P. G. M. Rhodes. 



Mrs. Elizabeth G. Britton, New York Botanical Garden, Bronx Park, New 

 York. — Bryoziphium norvegicum Mitt. Call, by E. G. B. at Dells of the 

 Wisconsin. 



