~ 
62 £0 correspondenis. Sept. 4s 
On the supposition that there are 60co cows necefsary for the sup- _ 
ply of London and its suburbs, there are consequently 9,852,0c0 gal 
Tons. of milk sold there in a year, or at an average, about 27,04° gal- 
lons daily; for which the cow-keepers get .246,300l.; and as the 
retailers get 1s. per gallon, it costs the inhabitants of London 
492,6001 per annum, or about 13501 per day, to be supplied with 
milk and cream. The butter consumed there comes at a greater dis~ 
tance, particularly from Epping, Cambridge,-tc. 
A CARD. 
Edinbur gh Sept. 1. 1793. 
Sfaques A-la-Greque hereby presents his compliments to ‘Anti-Satur- 
mus, and after exprefsing approbation of his piece on the poison of 
lead &c. with all which opinions he intirely coincides; would be 
glad to have an explanation of the last paragraph but two, vol. xvi. P. 
332, ‘the meaning of which he 1s altogether at a lofs to unde?_ 
stand. 
[The meaning seems to be that the Bachanalians ought to avoid 
the poison of lead, Jest it fhould cut them off sooner even than the 
poisonous liquor itself they so greedily swallow ; which would soon 
produce that effect.] E ait. 
He would also be much obliged to the author of the hints on the 
study of natura. \istor,, addrefsed to a young ady, if he would thew 
by what means he came to know that “ The art’ of printing, that 
choice blefsing to society, was discovered b> a goldsmith’s fhopman 
trying experiments with stamping with fhoe black, on wet paper iN 
some of his master’s puncheons. 
To CoRRESPONDENTS. 
‘THE communication by an observer is received and fhall be attended 
to. ' 
Philomanthes wifhes to see some uciehronneiol questions inserted 
in the Bee. It is with much concern the Editor observes that the stu- 
dy of mathematics is so much on thedecline in this country at present, 
as to makeit probable thatcomplying with thisrequest would prove disa- 
greeable to a greatmajority ofhis readers. He knows’ nothing that indi- 
cates so much an approaching decline of useful knowledge in Britain as 
this does, and he would be gtad to see a neat disquisition by an able 
hand tending to explain the cause of this alarming neglect of the funda~ 
mental principles of all true knowledge in mechanics. May it not in 
part be ascribed to quackery in the mode of teaching it? 
*4* The engraver not having been able to get the plate ready that 
Joould have accompanied this number itis delayed till the next, rq= 
ther than to give it uow in an imperfect staie. 
