1862.] THORNTON ZANZIBAR. 447 



Weald, and I wished to accept the triiids as representatives of the 

 as yet unknown feet of the Dinosaurs. I find that Prof. Owen has 

 referred to this view of the subject, both in his paper in the Society's 

 Journal, vol. xiv. p. 175, and in his ^ Palaeontology,' 2nd edit, 

 p. 293. 



Fig. 4. — Sketch of a Footprint from tlie Wealden Beds of the Isle of 

 Wight. (Two-thirds of the natural size.) 



9. On the Geology of Zanzibar. By Richard Thornton, Esq. 

 [From a Letter* to Sir E. I. Murchison, F.E.S., F.G.S., &c.] 



Our route lay from Mombas to the 8.W., over the Shimba, thence 

 N.W. to the Kadiaro, then S.W. to the Pare, then north to the Lake 

 Yipe, thence through Dafeta to Kilema, where we made one attempt 

 to ascend the Kilimandjaro, but had to turn back at an elevation of 

 about 8000 feet. We then went round by the foot of the mountain to 

 Madjami, thence we returned by Dafeta, Lake Yipe, Pare, and the 

 north foot of Usambara, to Wanga on the coast, which we reached 

 on the 101st day from Mombas. 



We did not succeed in reaching the top of the Kilimandjaro ; but I 

 have its altitude from six diff'erent stations, connected by tolerable 

 triangles at distances varying from 15 to 50 miles. From these I 

 believe the height of the Kilimandjaro to be about 20,000 feet. 



Its shape varies much as seen from difi'erent points of view ; but, 



from all places we have seen it, its base rises very gradually from a 



great plain : the outline of the top, as seen from Madjami, is a great 



dome (but this face is nearly flat); as seen from the east it is 



* Dated Zanzibar, November 16, 1861. 



