( ‘77 ) 
I. A Letter to Sir Hans Sloane, (Bart. R. S. 
Prxf, containing a Geographical (Dejcription and 
Map of the ^ngdom 0/ Tunis, with a Boft/cript 
relating to the Cure of Intermittent Fevers in 
thofe Barts-, By the Bfrerend Mr. Tho. Shaw, 
Chaplain to the Englifh Fahlory at Algier. 
SIR, Al • , . 
T ’ . AIg.er, July p. ,7,5. 
H lb waits upon you with a Map of the 
lyingdona of Tunis, which I have very faith- 
tuJly laid down, according to the Obfervations f late- 
ly made in thofe Parts. From funis I travelled as 
Hr VVeltward as Hydra, and from thence went to 
Tojer, palling from Tege^fe through the Lake of 
Marks, or the Pahs fritonia, as Itake it, to Gaps-, 
txom Gaps 1 travelled all the Way upon the Coaft 
to Rtjerta j but at the fame Time took Care to vifit 
luch PlacM within Land, where 1 could learn of any 
Kuins or Curiofities. I made ufe of a fmall, but ve- 
ry good Mariners Compafs, and found the Variation 
at Catr^an 10 Degr. Weft- at Biferta foraething more 
man Degr., and at Algier 1 find it now to be 30 
Degr. 30 Min. I carried along with me likewife a 
Urals Quadrant of a Foot Radius, and took the Lati- 
tudes of Turns, Cair-wan, Spetula, Gaffa, Tofer, 
Ebillee, Gaps, Stax, Sufa, Lomoharia Biferta, . 
With all the Exadnefs fuch an Inftruinent would 
admit of. As to the Longitude, mod Mariners 
whom I have converfed with, agree w-ithin 10 or 
Miles, that the Diftance between Airier and the 
Guletta (or Port ol funis) is 400 ^l,les. I have 
, ° ^ made 
