BY MEANS OF A CURRENT METER. 101 
APPENDIX A. 
Let the displacement of aship be represented by a figure 
such as abc d. 
a b represents to scale the area of the loadwater line, ad 
equals the draught, and yr is the virtual rise of floor. 
Ay, (H-1r) + Aw ee = volume of displacement = J, 
from which, 
Jom = IL ° IB ° Cone. 
C 
0, ph Au Al eons ). 
hee ( Gr 
Vertical prismatic coefficient = Us sOes 
Ay.’ Cwr : 
THE PRESIDENT :—We are now to have the pleasure of a paper, No. 6, entitled “Some 
Experiments on Propeller Position and Propulsive Efficiency,” by Rear Admiral David W. 
Taylor, Honorary Vice-President. 
Rear-Admiral Taylor, in presenting his paper, said: “Mr. President and gentlemen, 
my main object in presenting this paper is to attract the attention of the profession to a field 
which is large and unexplored, and the importance of exploring it. If I had known of the very 
comprehensive work that Professor Bragg had done, I do not think I would have undertaken 
to publish this paper.” 
Rear Admiral Taylor then presented the paper. 
