2 88 The Ohio Naturalist. [Vol. XI, No. 4, 



fomiation. Especial emphasis was placed on the distribution of 

 the stratum, 'for this formation only appears in isolated areas. 

 These isolated areas were foniierly supposed to be the result of 

 original deposition in separate basins, but the speaker was able to 

 show" that the isolation is due to the fact that the Maxville was 

 originally a continuous deposit, which after being raised to a 

 land surface was swept away in most places; the scattered rem- 

 nants later being submerged to receive the Pottsville. 



In the northern part of the area of exposures it was shown 

 that the formation consisted of a massive lower half separated from 

 a medium bedded upper half by a nodular shale zone. 



The researches of the speaker resulted in increasing the fauna 

 by 50% and the new forms clearly show the Maxville to have as 

 its closest equivalent the Spergen Hill (Salem formation) fauna of 

 Indiana. It was stated further that Ulrich has shown this Spergen 

 Hill fauna to recur in the Ste. Genevieve and Tribune limestones 

 and hence it is difficult to say with w^hich of these the Maxville is 

 equivalent. In the opinion of the speaker, after considering all 

 available evidence, the nearest equivalent would be the upper 

 member (Ohara) of the Ste. Genevieve limestone. 



The society adjourned immediately after the address. 



Bertram W. Wells, Secretary. 



Orton Hall, December 5th, 1910. 



The meeting was called to order by the President, Dr. Dach- 

 nowski. The minutes of the previous meeting were read and 

 approved. The President then introduced Dr. Joseph A. Leigh ton 

 who gave an interesting and stimulating address on "Some Con- 

 tributions of Biology to Philosophy." Prof. Leighton pointed 

 out the indebtedness of philosophy to biology showing in a num- 

 ber of instances how biological conceptions have invaded and 

 modified philosophical thought. Succeeding the address an 

 interesting discussion was engaged in by the faculty members 

 present. 



The latter part of the evening was taken up by reports of the 

 Ohio Academy of Science meeting held at Akron during the 

 Thanksgiving recess. Profs. Landacre, Osborn and Schaffncr 

 gave accounts of the papers presented and the work of the 

 academy. 



A short business meeting ensued. Mr. W. G. Stover, Mr. 

 C. H. Goetz, Miss Rose Gormly and Miss A4ary B. Linnell were 

 elected to membership. The society then adjourned. 



Bertram W. Wells, Secretary. 



Date of Publication, February 7, 1911. 



