-69- 



and the power to resist cold, the significance of this being that freezing tends to 

 draw water out from the cells, while the increase in the strength of the cell sap 

 would tend to counteract this. 



SULLIVANT MOSS SOCIETY NOTES 



A Correction 



Plagiothecium geophilum (Aust.) Grout, was found by me at Sulphur 

 Lick Springs, Ross Co., Ohio, about nine miles west of Chillicothe, Ohio, not at 

 Yellow Springs, Ohio, as given in Dr. Grout's note on p. 53 of the May Bryolo- 



GIST. 



Ross County, Ohio, is a good hunting ground for bryologists, being much 

 cut up by the Scioto River and numerous creeks, which have eroded the surface 

 into gullies and ravines from a few to several hundred feet deep. The wooded 

 sides of these cuts being too steep for cultivation, remain nearly wild land. 



•Geologically, it is in the Upper Silurian, and good sections from the Waver- 

 ly shales down to the Niagara limestone are found in different parts of the 

 county. The forests are entirely deciduous, the soil is clay, and the rocks 

 argillaceous shales and limestone. 



H. S. Jewett, M. D., 

 May 19, 1912. Dayton, Ohio. 



EXCHANGE DEPARTMENT 



(To Society Members Only — For Postage.) 

 Mr. George L. Kirk, 21 East Washington St., Rutland, Vt. — Grimaldia 

 fragrans (Balb.) Corda. 



Dr. George H. Conklin, 1204 Tower Ave., Superior, Wis. — Lophozia hetero- 

 colpa (Thed.) M. A. Howe and Scapania irrigua (Nees) Dumort. From the 

 Duluth-Superior district. 



Edward B. Chamberlain, Round Pond, Maine. — Hypnum hamulosum 

 B. & S. c. fr., and Pseudoleskea radicosa (Mitt.) Kindb. — Collected in Norway 

 by Dr. I. Hagen. 



Miss Caroline C. Haynes, Highlands, New Jersey. Marsupella emarginata 

 (Ehrh.) Dumort., Adirondack Mts., collected by C. C. Haynes, Jung, atro- 

 virens Dumort. Washington, collected by Dr. Frye. 



Mr. Geo. B. Kaiser, 564 Locust Ave., Germantown, Pa. — Andreaea cras- 

 sinervia Bruch. Collected in Washington by Prof. T. C. Frye. 



Rev. F. S. Beattie, Lincoln, New Hampshire, Ramalina farinacea (L.) Ach. 

 Collected in the Philippine Islands. 



