122 GEOLOGY OF OLD HAMPSHIEE COUNTY, MASS. 



fact that the crude emery could be entered free while the manufactured 

 article was highly taxed, and from the further fact that sailing vessels trading 

 with the Mediterranean were compelled to return in ballast and were thus 

 willing to deliver the crude emery in New York with little or no charge 

 for freight, he was able to create a lucrative industry. Latterly his sup- 

 plies have been drawn principally from the Southern States. 



In 1883 no work was in progi'ess except at the north mine, where six 

 men were employed, and during the year even this work was stopped. In 

 1890 the old mine was reopened and has since been worked continuously, 

 and the working has reopened the area where the fine diaspore occurs. 

 In 1894 an adit was driven into the hill on the north side of the road along 

 the eastern wall of the vein. 



In 1865 Prof C. U. Shepard published a report upon the mine,^ mainly 

 mineralogical, but containing notes on the geology of the vein. The report 

 was published in such form that it is not now obtainable, and it seems to 

 me desirable that it be published in full in this place. 



A Desckiption of the Emery Mine of Chester, Hampden County, Mass. 

 U. S. A., BY Charles Upuam Shepard, Massachusetts, professor of iSTatural 

 History iu Amherst College. (Printed by Taylor & Francis, Eed Lion Court, 

 Fleet street, London, 1865.) 



Correction. 



The statement iu this report respecting the suggestion of Dr. Lawrence Smith 

 was based upon a misapprehension of the facts. 



The whole credit of the emery discovery at Chester is due to Dr. C. T. Jackson, 

 who made a personal examination of the locality with reference to the iron ore, and 

 from his knowledge of the minerals associated with emery inferred the existence of 

 that mineral in this locality and advised an examination for the purpose of ascer- 

 taining whether it did not exist there. Dr. Jackson, among other sources from whence 

 he had derived information on the general subject, had in his possession the articles of 

 Dr. Smith on the emery of Asia Minor and on the associated minerals, published in 

 Vols. X and XI of the American Journal of Science. But Dr. Smith had no knowl- 

 edge of the Chester mine or minerals until after the published reports of the discovery 

 of the emery by Dr. Jackson. 



Charles Upham Shepard. 

 Boston, November 7, 1865. 



' A Description of the Emery Mine of Chester, Hampden County, Massachusetts. 16 pages. London. 



