244 BULLETIN OF THE 



tain the most feasible methods of working. I then made a reconnois- 

 sance east to Villa Clara, from which point a reconuoissance was made 

 north and south across the island. This trip was made primarily to 

 obtain some knowledge of the interior of Cuba. I was accompanied by 

 some American engineers who were familiar with the island, and who 

 were of great assistance to me in my subsequent operations. Returning 

 from Villa Clara to Havana, I stopped at several points, including 

 Matanzas and neighboring places. There were many opportunities to 

 study the basal contacts and structure of the limestones in relation 

 to the older nucleal area of Cuba upon which they were deposited. At 

 Matanzas I made a thorough study of the cut of the Yumuri River 

 of Matanzas, and of the limestone formations composing the Pan de 

 Matanzas and the country to the interioi', as set forth in the following 

 pages. Returning to Havana from Matanzas, I spent a few days studying 

 the geology of the site of that city and its environs, and in making a 

 north and south section across the island from Havana to Batabanos. 



On February 28, a coasting steamer was taken from Havana for 

 Baracoa, which stopped for four or five hours at various points on the 

 way. I arrived at Baracoa on the 4th of March. With Baracoa as a 

 base, I made a study of the country west of Yunque mountain and east 

 to Cape Maysi, taking a trip up the Yumuri River of the east. 



I sailed from Baracoa on the 13th of March, arriving at Philadelphia 

 on the 18th. 



I wish to acknowledge my obligations to Mr. E. Sherman Gould, of 

 New York, Consulting Engineeer of the Havana Water Works ; Rev. 

 Lorenzo J. Arrubla, of Real Colegio de Belen, Havana ; Seiior S. Fortun, 

 Chief Engineer of the United Railways of Havana ; Hon. A. B. Dickey, 

 Consular Agept of Baracoa, and many others throughout the island, for 

 valuable data furnished ; also to Prof W. H. Dall of Washington, for 

 his valuable assistance in paleontologic determinations of the age of the 

 rocks discussed herein. 



Looking back at my expedition, I now see many points which I would 

 like to examine again, but I hope that, upon the whole, you will not be 

 dissatisfied with the results. 



Very truly yours, 



Robert T. Hill. 



To Alex. Agassiz, Esq., Cambridge, Mass. 



