lieve, that the Impediment of his Hearing was of the like nature 
with the other, 
A New Difcovery touching Vifion. 
This is the Title of two or three printed jheets of paper^ lately fen* 
from Paris U the Publifiier, by the no lefs obliging than Ingentcus 
Monfieur Juftel - 7 In which are contained both an Epiflle of the 
Dif cover er Monfieur U Abbe Mario tte, of Dyons, to Monfieur 
Pecquet, md the Anfwer to it. of both which we cannot omit to 
' give the Reader the fab/lance inEn°\i(h, as follows y 
Aving often obferved in Anatomical DifTe&ions of Men as 
well as Brutes^ that the optick Nerve does never anfwer juft 
to the Middle of the bottom of the Eye, i.e. to the place, where 
is made the pi&ure of the Objefts, wediredly look on $ and that 
in man it is fomewhat higher, and on the fide towards the Nofe 5 
to make therefore tire Rayes of an Objedt to fall upon the Op- 
tick Nerve of my _Eye 5 and to find the confequence thereof I made 
this Experiment '\ 
Ifaftn'donan obfeure Wall about the high t of my Eye,a final! 
round paper, to fery e niefor a fixt point of Vifion- and I faftned 
fuch an other oft the fide thereof towards my right hand, at the 
diftance of about 2, foot; but fomewhat lower than the mtk] to 
the end that it might ft 1 ike the optick Nerve of my Right Eye, 
whiift I kept my Left (hut. Then I plac'd my felf over 3gainft the 
jpirft paper, and drew back by little and little, keeping my 
Bight f-lye fixe and very fteddy upon the fame- and being about 
xo.foot diftant, the fecond paper totally difappearU 
1 hat this cannot be imputed to the Oblique pofition of thefe- 
cond papei\ is hence evident, That I can fee other Objedts fur- 
ther extant on the fide of it f fo that one would believe, the fe- 
cond paper were by a flight taken away, if one did. not foon finde 
it again by theleaft 'fHrrirfg of one's Eye. x 
This Experiment I made often r varying it by different diftarr- 
ces, and removing or approaching the Papers to one another pro- 
portionally. I' made it alfo with my kft Eve, by keeping my 
Right fhut, after I h ad feftfledthe Second paper- on the Left fide 
of my point of Vifioji 5 fo 'that from the of the parts of the 
