MEMOIRS 
OF THE ; 
LITERARY ann PHILOSOPHICAL SOCIETY. 
Eee 
The Laws of Morton of @ Cyuiwoer, compelled by 
the repeated Strokes of a Fattinc Brock to penetrate 
an OpsTacte, the Refiftonce of which is an invariable 
Force. By Mr. Joun Goucu. — Communicated b 
Dr. Home. 
N°? practical benefit is to be expe&ed from the 
following Effay; for, though the idea is 
evidently borrowed from the Pile-engine, yet the 
operations of this Machine are fo much embarraffed | 
by friction and other irregular forces, that it would 
-be abfurd to compare its effects with the conclufions 
contained in the prefent Paper : the Piece is purely 
fpeculative, and exhibits a few mathematical truths, 
which perhaps may afford fome amufement to thofe, 
who are partial to fuch inquiries. 
Prostem I. If a Cylinder of ‘hard matter ref 
with one of its ends upon the horizontal furface of 
an obflacle, whofe refiftance is a conftant force, it is 
required to determine by means of the following 
M ma Data, 
