74 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



inch:zi400 feet; contour interval 20 feet. Fig. i. Map of Pine Rock. 

 Scale 1 inchz:: 1,000 feet. Fig. 5. Map of Mill Rock. Scale i inch = 

 1,000 feet. Fig. 16. Wintergreen notch. Page 44. Trap areas of 

 central Connecticut. Scale 1 inches miles. Page 82. Map of Round 

 hill and vicinity. Scale i inch zz:J^ mile. Page :i2. Stony Creek and 

 the Thimbles. Scale i inchizz^ mile. 



See also, The Four Rocks of the New Haven Region. New Haven, 

 :89i. 



517. Dana, J. D, 



Map. of the Triassic of Connecticut, from Hartford 

 down to the Sound. Reproduction of part of Percival's 

 map. 



Am. Jour. Sci., (3) xlii, pi. xvi, 1891. 



Scale approximately i inch=:6 miles. 



518. Davis, W. M. 



Sketch maps of Hanging Hills and trap sheet at Beck- 

 ley station. 



Mus. Comp. Z06I., Bull., vii, pi. x, 1884. 



519. Davis, W. M. 



Modification of a portion of Percival's geological map 

 of Connecticut (1842). 



U. S. Geol. Surv., 7th Ann. Rept., 1887. 



Locates, in color, the Triassic area of central Connecticut; principal 

 trap ridges are indicated. Scale 1:503000. 



520. Davis, W. M. 



Sketch maps of trap ridges. 

 U. S. Geol. Surv., 7th Ann. Rept., 1877. 



Trap ridges near South Britain, fig. 97; trap near Woodbury, fig. 

 99; Pond, Totoket, and Paug mountains, fig. 102. 



521. Davis, W. M. 



Sketch map of IMassachusetts, Connecticut, and Rhode 

 Island, giving location of Triassic area, and of ridges near 

 Meriden. 



Am. Jour. Sci., (3) xxxvii, 424, 1889. 



522. Davis, W. M. 



Outline map of southern New England. 

 Mus. Comp. Z06I., Bull., xvi, pi. i, fig. i, 1889. 

 Shows the Triassic area of the lower Connecticut valley (dotted) 

 and Meriden area (black square). Scale i inch =: 100 miles. 



523. Davis, W. M. 



Sketch maps of faulted areas in Triassic. 

 Mus. Comp. Z06I., Bull., xvi, 1889. 



Lamentation mountain, fig. 2; Shuttle Meadow reservoir, fig. 3; 

 faulted Triassic monocline, Meriden, fig. 9; Lamentation mountain, 

 Chauncy peak, and Higby mountain, fig. loa; Hanging Hills, fig. 11; 

 area from Cook's gap to Short mountain, fig. 13; trap ridges and 

 faults in the Meriden-New Britain district, fig. 16. 



