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found deficient in feveral particulars, or chargeable 
with fome midakes. 
Permit me the honour to be, 
My Lord, 
Your Lord fli ip’s 
Mod; humble and obedient Servant,, 
Strand, 
Nov. 23d, 1758. 
H. Baker. 
GVIII. A Defcription of the foffil Skeleton 
of an Animal found in the Alum Rock near 
Whitby. By Mr. Wooller. Communica- 
ted by Charles Morton, M. D. F. R. S . 
Read Nov. 23. HTTP is in this rock, that the Ammonita®, 
JL or Snake-dones, as they are common- 
ly called, are found, which have undoubtedly been 
formed in the exuvice of fillies of that diape j and 
though none of that fpecies are now to be met with 
in the feas thereabouts, yet they in many particulars 
referable the Nautilus, which is well known. The 
internal fubdance of thofe dones, upon a fedion 
thereof, appears to be a dony concretion, or muddy 
fparr. Stones of the fame matter or fubdance, in 
the fhape of mufcles, cockles, &c. of various fizes, 
are alfo found therein, and now and then pieces of 
wood hardened and cruded over with a dony fub- 
dance are like wife found in it. 
Many naturalifls have already obferved, that among 
the vad variety of extraneous fubdances found at fe- 
ver al 
