o.i6 APPENDI X. 



vered the motion of the muflel, which is indeed wonderful, 

 and that they lie in beds, which is not at all fo, have added 

 the reft to make their hiftory complete. 



It is obferved that pearls are always the moft beautiful in 

 thofe places of the fea where a quantity of frcfh water falls. 

 Thus in the Red Sea they were always moft efleemed that 

 were fifhed from Suakem fouthward, that is in thofe parts 

 correfponding to the country anciently called Berberia, and 

 Azamia, from reafons before'given ; on the Arabian coaft, 

 near the ifland Camaran, where there is abundance of frefli 

 water ; and the ifland of Fooiht, laid down in my map, where 

 there are fprings ; there I purchafed one I had the pleafure 

 to fee taken out of the fheil. It has been faid that the fifli 

 of thefe fhells are good, which is an error ; they were the on- 

 ly fhelLfifti in the lied Sea I found not eatable. I never faw 

 any pearl lhells on either fide fouthward of the parallel of 

 Mocha in Arabia Felix. As it is a fifli that delights in re- 

 pofe, I imagine it avoids this part of the gulf, as lying open 

 to the Indian Ocean, and agitated by variable winds,. 



In that part of my narrative where I fpeak of my.return 

 through the Defert of Nubia, and 'the lhells found there, I 

 have likewife mentioned the muffel found in the fait fprings 

 that appear in various parts of that defert. Thefe likewife 

 travel far from home, and are fometimes furprifed by the 

 ceaflng of the rains, at a greater diflance from their beds 

 than they have ilrength and moifture to carry them. In 

 many of thefe fhells I have found thofe kind of excrefcen- 

 ccs which we may call Pearls, all of them ill-formed, foul, 

 aad of a bad colour, but of the fame confluence, and lodged 



in 



