Proceedings. xxxiii 
Dr. W. Townsend Porter presented a valuable paper on the 
‘* Relation Between the Growth of Children and Their Devia- 
_ tion from the Physical Type of their Age and Sex.’’ 
November 207TH, 1893. 
President Pritchett in the chair, ten members and one 
visitor present. 
Prof. Kinealy gave a graphical method for finding the 
velocity of the piston in a steam engine. He made use of a 
curve which very much resembled the lemniscate, giving its 
equation, and some of its properties. He showed howits use 
very much simplified the computation of the velocity of the 
piston. 
Dr. Wm. Townsend Porter showed a modification of the 
ordinary apparatus in use for registering blood pressures. 
His modification was the substitution of a rubber bulb for the 
cumbrous water-box ordinarily used, to make the required 
changes of pressure. 
DrEcEeMBER 41TH, 1893. 
President Pritchett in the chair, 15 members and 1 visitor 
present. 
Dr. Hambach described some new fossils of stent 
Prof. Trelease, Judge Speck and Prof. Snow were elected 
a Committee to nominate officers for the ensuing year. 
The president referred to the death of Mr. Louis Schoelch, 
and the lecture of Prof. Morehead for Dec. 19th was 
announced. 
Decemper 181TH, 1893. 
President Pritchett i in the a 15 members present. ‘The — 
Committee on N, 
for 1894: — 
us P v Vw S 
