THE HERESY. 



25 



sweet element, compelling them to fetch it from 

 Zanzibar — their mainland ; hence travellers have 

 described the islet as uninhabited. The people 

 are mentioned as Moslems by Yakut (early 13th 

 century), and this island of 6 Tambat ' was made 

 a refuge for the inhabitants of Languja or Zanzi- 

 bar. We inquired in vain about the fort which 

 the Arabs are said to have built there. The 

 skins of Tumbatu are sooty, the effect, according 

 to some, according to others the concomitant, of 

 humid heat. The reader must not charge me 

 with 'trimming' between the rival schools of 

 c race versus climate, the cause of complexion.' 

 Many peoples betray but a modicum of chro- 

 matic and typical change. On the other hand, I 

 have found an approximation of colour as well as 

 of form between the Anglo-American and the 

 Luso-Brazilian ; and I have enlarged upon this 

 chromatic heresy, if heresy it be, in the High- 

 lands of the Brazil (Vol. i. chap, xxxviii.). 

 Finally, when speaking of the permanence of 

 type, it is well to bear in mind that our poor ob- 

 servations hardly extend over 2500 years. 



The next morning placed us at the base of 

 our operations, and we were on deck with 

 Aurora. The stout ship c Elphinstone,' urged by 

 the cool land breeze, slid down the channel, the 



