( 57 ) 
and Noftrils, fo it likevvrfe enters the Tunffa lacry - 
malia ; and muft neceflarily carry with if, towards 
the Punffia lacrymalia and their fmall Canals, the 
Moifture that lubricates the Surface of the Ball of 
the Eye, as it mixes with it. Therefore it is eafy 
to perceive already, that in order to preferve to the 
Tears their new and artificial Road into the Nofe, 
one need only commit the whole Care to the con- 
tinual Paflage of the Air and Tears. ’Tis well 
known in good Surgery, that Tis very difficult, not 
to fay impoffible, to effed a re-union in a Part, that 
ferves as an Emundory to a Liquor conftantly flow- 
ing to it. 
Now let us examine, if Nature alone can flop the 
Hole made by the Operation. It will not be ima- 
gined, that from the Remains of a bony Lamina , fo 
thin as the Os Unguis, a fufficient Quantity of 
offifying Juice can work out to flop it up. The Te- 
rioftium and Saccus lacrymalis are too much lacera- 
ted, to think it poffible for them to repair of them- 
felves what they had loft. Nor will it be believed, 
that the Membrana pituitaria can eafily fill up the 
Hole made in it. Thofe are the Parts concern’d in 
the Operation : But even if they are granted to be 
more difpofed to a Re-produdion than they really 
are, ftill the Air and Tears will always be able to 
preferve themfelves a Paflage into the No fe. 
Wherefore, after having deftroy’d the Saccus la- 
crymalis and Os Unguis , inftead of introducing an 
extraneous Body capable of making the Orifice of 
the fmall common Canal into the UuSlus lacrymalis 
become callous, and of drawing on a Suppuration, the 
Communication between the Nofe and Eye muft be 
H left 
