[ 37 ] 
but they had as yet no Wings. This Obfemtioii 
fhews, that the Author of the foregoing Account was 
miftaken, when he fays, “ Thefe Infe&s had at firft 
“ the Form of Grubs, or fmall Worms/’ They 
change their Skin fcveral times, but they do not ac- 
quire Wings till they have changed for the laft time. 
The Grafshoppcrs that were taken in England in 
1748. have been compared with thofe that have 
been lent over from Hungary and from Roland that 
fame Year, and they have been found to be perfe&ly 
of the fame kind. There are in Sir Hans Sloanes 
Colle&ion * fome of the fame fort ofLocufts or Grafs- 
hoppers, preferved in Spirits of Wine, and which 
were takep up here above thirty Years fince, and are 
exa&ly like thofe from Egypt and Barbary. 
X. A Letter from Mr, Henry Baker F.R.S. 
to the Prefid ent, concerning fome Vertebrae 
cf Ammonitae, or Cornua Ammonis ; com- 
municated to Mr, Baker by the Rev, Dr. 
Miles F, R. S. 
SIR, 
Read Feb. 9.JTHAVE now the Honour to lay before 
j 748-9. y QU a cur j OLls ant j mo fl. extraordinary 
Foflil, which was lately fent to me for that Putpofc 
by my worthy Friend Dr. Miles , of Tooting, F. R . S. 
It cop lifts of 26 Joints, which he calls Vertebra , 
and I believe fuppofes to have been the Joints of the 
Back-Bone or Tail of fome Animal 5 bur, upon con- 
fidering 
* See Sir Hans Sloane's Hill, of Jamaica, vol, I. p. 29. 
