Comets.” By 
fal oiice iv half a miuiute until the whole is drank: thisi for. 
an adult, “Phe quantity may be varied according to the age, 
fize, and conftitution of the patient. If neceffary, repeat the: 
dofe once in fix or eight hours. Confiderable evacuations 
I conceive to be not sonlly unneceflary, but injurious, “as 
they ferve to debilitate and prolong the difeafe. 
- Attea of plantain, or fome other cooling, fimple, drink, 
may be ufeful; and if a thirlt for eyder be Silonieded it ney 
be gratified. 
Carefully avoid keeping this preparation in veffels partak— 
ing of the qualities of f lead *, as the poifon produced bynl that 
means may prove aA deine 
The fuccefs of the remedy depends much om preparing anid 
giving the dofe, as above direted.—The fimplicity of this 
treatment renders it the more valuable, as all perfons have’ 
it in their power to avail themfelves of its ufe.—I have found 
it ufeful in agues, diarrhceas, and the yellow fever. 
DISTANCE CF COMETS FROM THE BARTH. 
Mr. Proferpin, w ho in the years 1775 and 14785 publifhed 
in the Tranfactions of the Swedifh Academy of Sciences, 
papers on the leaft diftance of comets from the earth, has 
publifhed, in the XVTith Vol. Part I. of the fame work, a 
continuation of that fubjeét, in which he gives a calculation 
of all thofe that have appeared fince 1785. He enumerates 
the different comets obferved by Saron, Mechain, Von 
Zach, Mafke!yn and Bode, and marks their leaft diftance 
from the earth in an annexed table. It appears from this 
paper, that none ‘of thefe eleven comets can approach very 
near to the earth. That, even, which paffes at the leaft: 
diftance, cannot approach nearer to it than about thirteen 
times the diftance of the moon from the earth;' andthe 
two next, when neareft to us, are twenty or twenty=fix 
times as Fa from the earth. Befides thefe, three ne can 
*Thii caution ought to’be extended to fome other witli alan Baws 
5 osieqeapproach 
