ryo MINUTES OF SECTION A. 



scope exhibited the interference colors of mica and selenite 

 films, and various crj^stallizations, including salicin and ben- 

 zoic acid. The effects of circular polarization were shown 

 by a quartz plate. Sanford Omensetter exhibited a living 

 specimen of the "little brown bat." Carol us M. Broomall 

 stated that he, with Dr. B. M. Underbill and Sanford Omen- 

 setter, had succeeded in taking the respiration and pulse of 

 the bat above mentioned, the respiration being i6o and the 

 pulse 448 ! Dr. B. M. Underbill presented a specimen of the 

 brown longhorn. Albert S. Barker exhibited under the 

 microscope the stellate hairs of the Deutzia. 



July 22, 1909. — Carolus M. Broomall made some remarks 

 concerning the proper cui'ves for a private roadway forming 

 the approach to a dwelling, providing for the approach of an 

 automobile and its departure, passing around a grass plot or 

 shrubber}^ Sanford Omensetter exhibited a branch of a 

 shrub or small tree which is growing on a lawn in Springfield 

 Township. Charles Potts stated that it was known as a Jap- 

 anese orange. Sanford Omensetter stated that he had seen 

 schools of young catfish in a landlocked quarry hole on the 

 premises late of Charles G. Ogden, in Springfield Township, 

 and wondered how they got there. T. Chalkley Palmer 

 quoted Izaak Walton, who said it was possible for them to be 

 conveyed from pool to pool via the heronshaw. Carolus M. 

 Broomall spoke of the fossil tree stump which he had caused 

 to be brought from the grounds of the Shortlidge School and 

 placed in the Institute yard. Charles Potts suggested that the 

 fossil had been formed by the gradual substitution of slaty, 

 siliceous matter in place of the decaying substance of the tree. 

 The condition of the Media water supply was the subject of 

 general discussion. T. Chalkley Palmer had been observing 

 l:>ees, and was amazed at their intelligence. In this connec- 

 tion he quoted Maeterlinck, who had made interesting experi- 

 ments with these insects. James Vail spoke of ice crystalliz- 

 ation observed by him in the Alps. These crystals were 



