278 G. B. Grant—New Calculating Machine. 
The diagram, fig. 1, will illustrate Pascal’s design sufficiently 
for the purposes of this article. A horizontal wheel having 
e traction, according as we read by 
4 me row or the other. Carnage 
was accomplished by mechanism 
on the shaft of the cylinder, which 
bao forced the next cylinder forward 
one figure whenever its own passed 
from 9 to 
Pascal’s machine was not a success, for though correct in 
theory it was so complicated, delicate, uncertain, and limited in 
its operations, that it was practically useless. But the principles 
of its action, particularly the toothed wheel, fixed figured are 
and stop, and the complementary rows of figures, have appeared 
in most subsequent machines, and have been patented many 
PASCAL’S MACHINE, 
The next attempt resulted in a substantial success, and by 4 
man otherwise entirely unknown. Charles Xavier Thomas de 
