[ 3 2 3 ] 
and could never afterwards continue in any other 
Pofture, without great Smugglings, or finking down 
to the Bottom of the Veflel. Which may ferve to 
fhew how nicely and wonderfully the Bodies of 
Fifhcs are balanced, for the keeping them in an ho- 
rizontal Pofition ; fince in this Cafe the lofing a 
few Grains of the Tail could fo fcnfibJy deflroy the 
Equilibrium, as to render the reft of its Fins almoft 
ufelefs. 
I dare not however aflert it will happen thus to 
all forts of Fifh on cutting off the T ail 5 nor docs it 
to the Roach immediately : For as it is a Pofture 
very unnatural and troublefome to Fifties, they exert 
all their Strength to prevent their Heads from fink- 
ing downwards; until, being wearied out, they at 
laft are forced to fubmit. I remain, 
‘Dear Sir , 
Norwich , April 14 , 
1748. Tour moji obedient Servant , 
» ' 
W. Arderon. 
IX. A Tetter from Mr . Robert Roche to the 
Prefident, of a Fuftian Frock being fet on 
Fire by Electricity. 
Honoured Sir , London , May 17, 1749.. 
Read May ^-XF your Goodnefs will excufe the Li- 
*747- -JL berty a Stranger has taken in giving 
you this Trouble, hoping the following Account 
will 
