(3") 
what hollow in the middle. All the Ground in this 
place is full of Limc-ftone. 
You defired in yours a Colledion of Shells from this 
place, I forbore to write hoping to have gotten fbme, 
but have not been fo happy yet, for that there is Httle 
or no Communication with the Inhabitants of the Ifios, 
the Sea is lb infefted with Py rates. I am promifed by a 
Friend who is going to Sky a Parcel, which if I get 
them I fliall fend to you ; in the mean time I thought 
it might be acceptable to you , to give an Account x)f 
the rareft I have feen found here, or in our Ifles ; If I 
could have had your Hiftoria or Synopfis Methodic a Con» 
chiliorumy I could have digefted them in better Order ; 
but the' I gave (everal CommifGons to our Book-fellers 
that went for I could never have it yet, they 
faid to me it was not to be found in the Shops, I have 
entreated the Gentleman who delivereth this Letter to 
you, to know of you where it may be had, I am in 
hopes to learn much of Shells from it : Bonani giveth 
but little light in this matter. 
Of the Vnivahes. 
The rareft are i. the Nautilus Falconeri ^ the Shell 
was fcnt me by a Friend from the North, and was broken 
by lying amongft the Stones upon the Shoar : The 
Strudure is marvellous where the Animal lyeth, there 
are two Decks vifible one above another of a Pearl G)- 
lour ; there is a hole in the upper Deck naturally, thro' 
which may be feen the other Deck at fome diftance from 
the upper, and fuch another hole in it ; the higher 
part of the Shetl which refembleth a Helmit where it 
is broken fiicwerh feveral vaulted divifion,betwixt which 
a Tube paiTeth that is hollow, they are of the Colour 
of Pearl too. The outmoft Coat of the Shell is of a dark 
Grey Colour, which is much worn oflf in this, and 
there 
