No. 8.] BIBLIOGRAPHY OF CONNECTICUT GEOLOGY.- 85 



trap sheet, fault and river at Tariffville. Figure 19. Map of glacial 

 striae in Connecticut. Scale approximately i inch 1^20 miles. Figures 

 20-22. Three maps of the Farmington river and tributaries, showing 

 pre-Glacial drainage, Glacial modifications, and present stage of de- 

 velopment. Scale approximately i inch:=:2o miles. 



582b. Robinson, H. H., and Gregory, H. E. 



Preliminary geological map of Connecticut. 

 Connecticut Geol. and Nat. Hist. Surv., Bull. No. 7. 

 (See Gregory and Robinson, 5393.) 



583. Russell, I. C. 



Maps of the Connecticut valley sandstone areas. 



U. S. Geol. Surv., Bull. No. 85, pis. i, iii, 1892. 



Map of areas occupied by Newark system. Scale i inch ::^ 120 miles. 

 Map of Triassic of the Connecticut valley, giving sedimentary, trap 

 rock, and pre- Newark areas. Scale yi inch 1=5 miles. 



584. Smith, Alfred. 



The Connecticut river valley. 

 Am. Jour. Sci., (i) xxii, 205, 1832. 



Includes a strip about forty miles wide through the central part of 

 Connecticut, showing the extent of the Primitive and Secondary forma- 

 ations. Scale 2^4 inches=:40 miles. 



585. United States Geological Survey. 



Map of the United States, exhibiting the progress made 

 in the geographic survey. 



U. S. Geol. Surv., Sth Ann. Kept., pi. i, 1883-84. 



Shows the triangulation areas of Connecticut; also the area surveyed 

 by other organizations than the U. S. Geological Survey. 



586. United States Geological Survey. 



Topographical atlas of the state of Connecticut. 



United States Geological Survey in cooperation with 

 the state of Connecticut. 1893. 



An atlas consisting of 33 sheets covering Connecticut and parts of 

 adjoining states. 1893. Scale i inchi^i mile; contour interval, 20 feet. 



(This is the only complete atlas of Connecticut in existence. For a 

 history and description of this map, see Connecticut State Geol. Nat. 

 Hist. Surv., Bull. No. 7. The map may be obtained from the State 

 Librarian, either bound or in separate sheets. — Ed.) 



587. United States Geological Survey. 



Topographic map of Connecticut. 



United States Geological Survey in cooperation with 

 the state of Connecticut. 1893. 



A two-sheet wall map. Scale i inch 1^2 miles; contour interval 100 

 feet. 



(Map may be obtained from the State Librarian unmounted or 

 mounted on muslin with rollers. — Ed.) 



