174 THE RESISTANCE OF VARIOUS TYPES OF BARGES. 
any eastern river boat men here, with practical experience, to throw any light on the 
subject ? 
THE CHAIRMAN :—We will extend the thanks of the Society to Professor Sadler for 
his very able paper, and pass to the next paper, No. 14, entitled “Feathering Paddle-Wheels,” 
by Professor E. M. Bragg. In the absence of Professor Bragg, this paper will be presented 
by Professor Sadler. 
Mr. E. H. Ricc, Member (Communicated) :—Owing to the amount of work still ahead 
of the meetings and the approach of the time for adjournment, I felt that it was perhaps 
better to submit my remarks in writing after the meetings. 
One who has carefully followed commercial model tank work cannot fail to be grati- 
fied by the marked amount of progress that has been made during the last four or five years, 
and to no one are we more indebted than the present author for his valuable contributions to 
our transactions. 
The present paper explores a field of which the literature is very meagre, at least, in our 
own language. Continental Europe has highly developed canal and river systems, but the pos- 
_ sibilities of saving due to improved barge forms are nowhere greater than with us. 
The scope of the present paper is wide and we are enabled to choose the most suitable 
form not only for deep water, but also for shoal water and for towing in fleets. 
Our transactions bear witness to the improvements taking place in inland boats, vide Mr. 
Bernhard’s paper last year as an example; the present paper is also of value to the floating 
equipment departments of our railroads. 
Professor Sadler presented the paper. 
