Reviews — Tibetan Palceontology. 429 



a staff of women clerks, and even thus thirty years have almost 

 slipped away. Our thanks go out to all these workers. 



It is only by these combined labours that work will be possible in 

 the future. Indeed, it might be well if some encouragement were 

 offered to those who devote themselves to compilations which quarter 

 the work of the specialist, but are often the object of his indifference, 

 and which {crede experto) he is sometimes too lazy even to use. 



VII. — Tibetan Palaeontology. 

 Le Cretace et l'Eocenk do" Tibet Central. By Professor Hknri 

 Douville. Palaeontologialndica, 1916, new series, vol. v, Memoir 

 No. 3, pp. 1-46, pis. i-xvi. Appendix by M. L. Morellet : 

 Note sur les Algoes Siphonees Vertictllees, pp. 47-9, text- 

 figures. Price 4 rupees, or 5s. Ad. 

 fMHIS memoir is descriptive of a collection of fossils obtained by 

 JL the Tibetan Frontier Mission of 1903-4, under Colonel Sir P. E. 

 Younghusband, of which Mr. H. H. Hayden (the present Director 

 of the Geological Survey of India) was the Geologist in charge. 

 Mr. Hayden has already published two important memoirs on the 

 geological results of the expedition (Records Geol. Surv. India, 

 vol. xxxii, pp. 160-74, pi. vii = geological map, 1905, and Mem. 

 Geol. Surv. India, vol. xxxvi, pt. ii, pp. 122-201, with plates, 

 sections, views, and map, 1907), in which a good general account is 

 given of the specimens collected, together with the different horizons 

 which they indicated. 



The stratigraphy of the region as therein explained is briefly as 

 follows : Supposed Palaeozoic rocks, without fossils, in the Khonbu 

 Valley; Trias (?), east of Dothak, with indeterminable Pelecypoda ; 

 Jurassic at Tsang and IT, containing Trigonia, Harpoceras, etc. ; 

 Spiti Shales with characteristic Ammonites at Kampa JJzong ; while 

 Cretaceous and Tertiary formations, grouped as the "Kampa Series", 

 were developed at Kampa Dzong and Tuna, from which the chief 

 fossils were obtained. The Kampa Series being highly fossiliferous 

 enabled Mr. Hayden to divide its Cretaceous portion into the 

 Cenomanian, Turonian, Senonian, and Maestrichtian stages, the 

 Tertiary being regarded as Eocene and the equivalent of the Lower 

 Banikot deposits of Western Sind, chiefly on account of the presence 

 of what was determined as Velates schmideliana. 



As a resume of Hayden's reseai'ches further valuable remarks on 

 the Cretaceous and Eocene stratigraphy of this region were made by 

 Mr. Vredenburg in his paper on the Cretaceous Orbitoides of India 

 (Records Geol. Surv. India, vol. xxxvi, pp. 186-90, 1908). Erom 

 an examination of the fossils he was of opinion that the Tibetan 

 Cretaceous sequence resembled that of Baluchistan, Persia, and 

 Southern India, and that the Eocene corresponded with the Lutetian 

 of Europe and the Laid group of India. 



The present monograph deals exclusively with the palaeontology 

 of the " Kampa Series " (named after Kampa Dzong, nearly 200 miles 

 south-west of Lhasa), several of Hayden's determinations being- 

 preserved, while others have been revised and added to in consequence 



