74 MEETING, MONDAY, MAY 2. 



(of his own contrivance, and for which a patent has been 

 applied for) , for using the sun's rays as a means of heat- 

 in «• and ventilation. He mentioned that he had in use at 

 the hall of the Peabody Academy of Science in this city, 

 a simple apparatus, that had effected a marked change 

 in the ventilation ; by means of which fresh air was 

 introduced into the building, and the air as it entered the 

 room, by the utilization of the sun's rays, was from 

 fifteen to thirty degrees, Fahrenheit, warmer than when 

 it entered the apparatus from the outside. A small model 

 of the apparatus and ample drawings on the blackboard 

 fully illustrated his remarks. 



Prof. I. J. Osbun, of the Normal School, asked sev- 

 eral questions which were satisfactorily answered by 

 Professor Morse and contributed much to render the 

 account more interesting and iustrutive. 



Before commencing his talk, Professor Morse re- 

 ferred in a very pleasant manner to the lecture of 

 Professor Wright at the last meeting of the Institute, on 

 the "Glaciation of North America and its bearing on the 

 Antiquity of Man in New Jersey." Professor Morse 

 endorsed the statements of Mr. Wright, and said that 

 during a recent call on Dr. Abbott, who is making in- 

 vestigations in the Delaware valley, he had found sev- 

 eral of the chipped-stone implements which he had de- 

 scribed. Drawings of these stones were made on the 

 blackboard. 



Adj. 



