FOURTH ANNUAL REPORT PHOTOGRAPH COMMUrTEE. 555 



Good mounted photographs of geological subjects, properly labeled, are solicited 

 as heretofore, and contributions may be sent to Professor J. F. Kemp, Columbia 

 College, Xew York city ; Professor W. M. Davis, Harvard College, Cambridge, 

 Mass., or to Mr J. S. Diller, United States Geological Survey, Washington, D, C. 



There is demand for such photographs as furnish especially good illustrations in 

 teaching, and it is hoped that the members will call the attention of the Secretary 

 to an}' which the committee may obtain by solicitation. 



REGISTER OF PHOTOGRAPHS RECEIVED IN 1893 



Photographed and presented by C H. James, 624 Arch Htreei, Philadelphin, Pennsylvania 

 Twelve Stereoscopic views of the Luray Caverns of Virginia. Price, 25 cents each. 



741 (15). Side view in ball-room. 



742 (19). Collin's grotto. 



743 (25). Entrance to ball-room. 



744 (27). Double column. 



745 (29). Giant's hall. 



746 (33). Lost blanket. 



747 (35). Titania's veil from Hollow column. 



748 (37). Empress column. 

 749(41). Saracen's tent. 



750 (43). Fallen column. 



751 (47). Organ room. 



752 (71). Skeleton gorge. 



Presented by Henry G. Hanks, San Francisco, California 

 Photographed by C. E. Watkins. Size, 6^ x 8^ inches 



753. Hanksite ; crystallized variety. 



754. Hanksite; amorphous and imperfectly crystallized variety. 



Presented by H. A. Riddle, Chambersbiirg, Pennsylvania 



755. Photogravure of a Relief Map of the Cumberland valley of Pennsylvania 



By applying to Mr Riddle members of the Society may obtain this photogravure 

 gratis. Size, llf x 3} inches. 



Photograplied and presented by W. H. Hobbs, Madison, Wisconsin 



These views illustrate two papers which are published in the Journal of Geology, 

 vol. i, p. 717, " On the Geological Structure of the Mount Washington Mass of the 

 Taconic Range," and p. 780, "The Geological Structure of the Housatonic Valley 

 east of INIount Washington." They may be purchased from the donor at the fol- 

 lowing rates: Size, 4x5 inches; unmounted, 7 cents; mounted, 10 cents. Size, 

 8 x 10 inches; unmounted, 12 cents; mounted, 18 cents. 



756. INIount Washington from the north ; looking up Guilder Iiollow. To the left 



is "Jug End." In the distance is the " Dome " or mount Everett, between 

 is mount Darby. Size, 8 x 10 inches. 



