Trousattimis Socirly .Vflffl/ Architects and Marint Engineen. Vol. 20. igi3 



To illustrate paper on "Logarithmic Speed-Power 

 by Thomas M- Gunn, Esq. 



Diagram,' 



X 



if) 



2 

 o 



g 



o 



3 



iii 



O 



I 



