Feb., 1909.] Meeting of the Biological Club. 45^ 



arranged in a circle and developing a continuous cambium 

 cylinder, forming annual rings of growth in the case of perennial 

 stems, with bark on the outside; leaves usually netted-veined ; 

 flowers more commonly pentamerous or tetramerous. 

 Subclasses, Choripetalae 

 Centrospermae 

 Apctalae 

 Heteromerae 

 Sympetalae Hypogynae 

 Sympetalae Epigynae 



MEETING OF THE BIOLOGICAL CLUB. 



Orton Hall, Nov. 2, 190S. 



The minutes of the previous meeting were read and approved 

 as read, after which the following, proposed at the last meeting, 

 were elected to membership: B. M. Wells, Geo. Simmons, Clyde 

 Miller, and John Foreman. 



The nominating committee submitted the following names 

 for officers of the club during the coming year: 



President, Miss Freda Detmers; Vice President, H. H. Severin; 

 Secretary-Treasurer, Arthur H. McCray. 



The persons named were unanimously elected. 



The program of the evening consisted of the president's 

 annual address by Dr. Geo. D. Hubbard. 



The retiring president presented a preliminary report on the 

 physiography of the four local quadrangles, covered by the Dub- 

 lin, Westerville, East Columbus, and West Columbus topographic 

 maps of the United States Geological Survey. He had done the 

 work during the last year or more under the direction of the 

 Geological Survey of Ohio, which organization is looking forward 

 to the preparation of a bulletin discussing the geology, mineral 

 and rock resources and physiography of this region. 



The area is about 27 miles east and west by about 35 north 

 and south with Columbus near the center. At present, physio- 

 graphically, it consists of a young till plain adorned with one 

 large morainic belt in the northern part and several smaller 

 moraines looped across it from east to west; with scattered 

 kames and kame areas, and eskers ; with kettle ponds and swamps 

 usually now extinct; and the whole in a very youthful stage of 

 dissection. 



The moraines were left by the halting retreat of the Late Wis- 

 consin ice sheet, while the till plain is the aggregate accumulation 

 of drift from two or more ice invasions. Many localities were 

 mentioned where drift older than the surface material had been 



