342 Spencer — Submarine Valleys off North America. 



on the subject, and together with the discussion of the bearings 

 is the foundation of the subsequent work.) Abstract in Am. Nat., 

 vol. xxviii, pp. 881-884. Also an important "Note on Mr. Kum- 

 mel's review," concerning the gradient of the valleys. Jour. 

 Geol., vol. iii, pp. 497-498, 1895. 



4. "The Yumuri Valley of Cuba — a rock basin." Geol. Mag. 

 Lond., IV, vol. i, pp. 499-502, 1894. 



5. " Preliminary Notes on the late Connection and Separation 

 of the Pacific Ocean and Gulf of Mexico," lb., vol. ii, pp. 306- 

 308, 1895. 



6. " Geographical Evolution of Cuba," Bull. Geol. Soc. Am., 

 vol. vii, pp. 67-94, 1896 (with more details of the submarine val- 

 leys and their geological relationship, terraces, etc.). 



7. "On the Continental Elevation of the Glacial Period," Geol. 

 Mag. Lond., IV, vol. v, pp. 32-38, 1898 ; Abstract B. A. Rept. for 



1897, pp. 651-652. (This contains a notice of the recurrence of 

 the submarine valleys, on both sides of the North Atlantic and in 

 the Arctic Sea. It was preliminary to No. 23.) 



8. " Geological Canals between the Atlantic and Pacific Oceans." 

 Abstract preliminary to No. 9. Proc. Am. As. Ad. Sc, vol. xliv, 

 pp. 139-140. 1896. 



9. " Great Changes of Level in Mexico and the Interoceanic 

 Connections," Bull. Geol. Soc. Am., vol. ix, pp. 13-34, 1898. 

 (Here is shown changes of level complementary to those indi- 

 cated in the submarine valleys.) 



10. " Late Formations and Great Changes of Level in Jamaica." 

 Trans. Can. Inst. Toronto, vol. v, pp. 324-357, 1898. (With 

 further details of the relationship of the submarine valleys to the 

 land features, of the characteristics of the submarine platforms, 

 of land connections, etc.) Abstract in this Journal, IV, vol. vi, 

 pp. 270-272, 1898. 



11. "Resemblances between the Declivities of High Plateaus 

 and those of Submarine Antillean Valleys." Trans. Can. Inst, 

 lb., pp. 359-368. Abstract this Journal, IV, vol. vi, pp. 272-273, 



1898. (Showing the gradients of both kinds of valleys by steps, 

 an important supplement to the Antillean paper, No. 3.) 



12. "The West Indian Bridge between North and South 

 America," Pop. Sc. Monthly, vol. liii, pp. 10-30, 1898. 



13. " Geological Waterways across Central America," lb., pp. 

 577-593. 



14. "Prof. Hull's < Submerged Platform of Western Europe.'" 

 Geol. Mag., Lond., IV, vol. vi, pp. 16-18, 1899. 



15. "Mr. Huddleston's 'On the Eastern Margin of the North 

 Atlantic Basin.' " lb., pp, 559-566. (A reply to his criticism of 

 Prof. Hull's work.) 



16. " The Windward Islands of the West Indies." Trans. Can. 

 Inst., vol. vii, pp. 351-370, 1901. 



17-22. "On the Geological and Physical Development of: — 

 Antigua ; Guadeloup, Anguilla, St. Martin, etc. ; St. Christopher 

 Chain and Saba Banks ; Dominica ; with notes on southern 



