loo The Ohio Naturalist. [Vol. XIII, No. 5, 



40 mm. diameter, surrounded by a mycelium 15 mm. wide. In 

 another specimen of about the same size the central part of the 

 algal layer was covered again by a mycelium 12 mm. in diameter, 

 so that now this mycelium was surrounded by an algal and a 

 fungal layer in the shape of concentric rings. The apothecia in 

 the last mentioned case were distributed as well on the inner as on 

 the outer mycelium. 



The apothecia are usually provided with a great number of 

 asci, each containing S colorless, more or less elliptical spores, 

 which are liable because of their small size (11-16x7-8 mic.) to be 

 blown to long distances by the wind. 



On finding a proper substratum, as seems to have been the case 

 here, the algae on the moist sandstone, they reproduce innumerable 

 new plants. They lead a symbiotic life, apparently without 

 either benefit or harm to the algal symbiont, but certainly with 

 benefit to the fungal part. 



MEETING OF THE BIOLOGICAL CLUB. 



Orton Hall, November 4, 1912. 



The club was called to order b}^ Pres. W. M. Barrows. The 

 minutes of the last meeting were read and approved. 



The principal business of the evening was the election of 

 officers. The nominating committee reported the names of two 

 candidates for each office and the following were elected: 



President, W. G. Stover 



Vice-President, Blanche McAvoy. 



Secretary-Treasurer, Marie F. McLellan. 



Following the election came the president's address on "Some 

 Recent Work Along the Line of Mendel's Law." 



Prof. Barrows discussed Mendel's original idea and showed 

 that the results of modem work have been slightly different from 

 Mendel's expectations. The purity of germ cells and their un- 

 changeability have been questioned. It has also been shown that 

 units are not physiologically separate, but react on one another. 



He then took up the phenomena of sex-limited inheritance and 

 showed illustrations from the experiments of Pearl and Surface on 

 barred and non-barred chickens. 



He showed also that dominance is not a necessary factor in the 

 l)roduction of Mcndclian ratios. 



The meeting was then adjourned. 



Marie F. McLellan, Secretarv. 



Correction. — In the February Ohio Naturalist, ]). 70, first 

 line below "Synopsis of the Plant Phyla," read "then" instead 

 of "through." 



Date of Publication, March 25, 1913. 



