506 



No. 1. No. 2. Mean. 



Silica, . . . 52-49 51-24 51-86 



Alumina, . . . 1329 12-46 12-87 

 Peroxide of iron, containing phosphates ^ 



corresponding to 1-01 Phosph. Acid, I 18-19 18-94 18-56 



and also a trace of Manganese, j 



99-87 100-25 100-23 



Ojihheway Pottery. 



The specimen of this ware which I examined, in general appear- 

 ance very much resembled the Ancient British Pottery, being like it 

 made of unprepared clay, marked on one of its surfaces by lines 

 forming part of some simple design. In colour, the surfaces of this 

 ware were whity-brown. The section of the fragments presented a 

 black appearance, almost as if the clay previous to firing had 

 been mixed with some carbonaceous substance. It was, however, 

 better fired than the British ware, and rung to some extent when 

 two pieces were struck together. 



100-19 



100-18 



100185 



Lustrous Red Roman or Samian Ware. 



This pottery has ah'eady been analysed more than once, and my 

 analysis was only confirmatory of those already published. It would 

 appear that in many of those pottery clays peroxide of iron can to 

 a very great extent replace alumina, for, in the specimen I ana- 



