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



well data include source, temperature, yield, quality (including analyses), 

 and uses; the spring data, temperature, yield, source, use, improve- 

 ments, and quality (including analyses). 



124. Gregory, H. E. 



Underground waters of eastern United States: Connec- 

 ticut. 



U. S. Geol. Surv., Water-Supp. and Irr. Paper No. 

 114, 76-81, map, 1905. 



The water supply as related to the geology of the state. The lime- 

 stone area, sandstone area, crystalline area, faults, drift, are the sub- 

 heads. 



124a. Gregory, H. E. 



The Geology of Connecticut as related to water supply. 

 Connecticut Board Agric, Rept., 283-297, 1906. 



Description of the sources of water supply — rivers, lakes, ground 

 water. 



124b. Gregory, H. E., and Rice, W. N. 



Manual of Connecticut geology. 



Connecticut State Geol. Nat. Hist. Surv., Bull. No. 6. 

 259 pp., 31 pis., 22 figs. (10 maps), 1906. 

 (See Rice and Gregory, 243a.) 



124c. Gregory, H. E., and Robinson, H. H. 



Preliminary geological map of Connecticut. 



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

 39 pp., I fig., 1907, together with a geological^ map of Con- 

 necticut, 1906. 



A description of the geological map, also an outline of the geology 

 of the state, history of the Connecticut surveys, and an outline of 

 geological work done in the state by various organizations and indi- 

 viduals. 



125. Griswold, L. S. 



A basic dike in the Connecticut Triassic. 

 Mus. Comp. Zool., Bull, xvi, 239-242, 1893. 



Description (chiefly petrographic) of a dike occurring on the outlet of 

 Beseck lake, about a quarter of a mile west of the Air Line R.R. at 

 Baileyville; the rock probably an augite-amphibole-fourchite. 



126. Gurlt, A. 



On a remarkable deposit of wolfram ore in the United 

 States. 



Am. Inst. jMin. Eng., Trans., xxii, 236-242, 1893. 



Description of the wolfram ores and their geological occurrences. 

 The Connecticut ores, consistinc; of wolframite, scheelite, and wolfram 

 ochre, occur upon a " so-called contact deposit " imbedded between 

 crystalline limestone and gneiss in Trumbull. The wolframite 

 crystals are pseudomorphs after scheelite. Brief history of the work- 

 ings of the mine is given. (See Ilobbs, 156.) 



