420 Prof. Waxuace on the Invention of the Pantograph, 
trical and Graphical Essays,” by Gzorcr Apams, printed in 1791, 
I found it described under the name of a Pantographer. Apams 
says, “* I have not been able to ascertain who was the inventor 
of this useful instrument. The earliest account I find is that of 
the Jesuit ScHerner, in a small tract entitled, Pantographice, 
sive ars nova delineandi.” 
Avams must either never have looked into Scurrner’s book, 
or assuredly must have forgotten what is in it: Monrucua, ip 
his Histoire des Mathematiques, says expressly that ScHEINER 
was the inventor. In enumerating this learned Jesuit’s wri- 
tings, he mentions his work called Pantographia, in which, he 
says, the construction and use of the Pantograph is described ; 
and he adds, “ that, independently of his other writings (which 
Monrucua did not highly esteem), the invention of this instru- 
ment alone ought to have given immortality to his name.” 
Besides this notice of Montucua, and ScurerNer’s own book, 
TL have met with no other recorded testimony that he had the 
merit of being the inventor of the Pantograph, although such 
may exist. 
There is an instrument, exactly the same as Scuerner’s, de- 
scribed and figured in a folio work on Geometry and Perspective 
(of which there were various editions), by Samurit Marovors, 
who must have been his contemporary. There is also a figure 
and description of a like instrument in a small book called Thau- 
maturgus Mathematicus, printed in 1651 ; but in neither are we 
told who was the inventor, nor is even a name given to the instru- 
ment, although I have no doubt it was that of ScHEINER’s in- 
vention. 
I see it described in Bron’s treatise on Mathematicai Instru- 
ments (edit. 1723), where it is called the Pentagraph : and again, 
in the History of the Academy of Sciences for 1793, where it is 
called the Pantograph ; still the inventor is not named. In this 
last mentioned work, some defects in its construction are pointed 
out, and improvements suggested by Lanexo1s, Engineer to the 
