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



6i. Dana, J. D. 



On the southward ending of a great syncHnal in the 

 Taconic range. 



Am. Jour. Sci. (3) xxviii, 268-276, map, 1884. 



Discussion of the geological relations of limestene and schist of the 

 Mount Washington portion of the Taconic range, which extends into 

 northwestern Connecticut. (See Dana, 59.) 



62. Dana, J. D. 



Note on the origin of bedding in so-called metamorphic 

 rocks. 



Am. Jour. Sci., (3) xxviii, 393-396, 1884. 



Discussion to prove that gneiss, schist, quartzite, etc., are parts of a 

 stratified series. The production of schistose bedding by pressure has 

 a very limited application; field evidence supporting this view at Stony 

 Creek, Derby, Lime Rock, Canaan. 



63. Dana, J. D. 



On the decay of quartzite, and the formation of sand, 

 kaolin, and crystallized quartz. 



Am. Jour. Sci., (3) xxviii, 448-452, 1884. 



Discussion of the formation of sand, kaolin, and crystallized quartz 

 from feldspathic quartzite; mentions kaolin deposits of Sharon and 

 Canaan. 



64. Dana, J. D. 



The till ridge of New Haven, called Round hill. 



Am. Jour. Sci., (3) xxix, 66-67, 1885. 



Brief consideration of Davis's criticism as to origin of this hill, as 

 described by Dana in a previous article. Round hill deposited by 

 waters descending through crevice in ice; objection by Davis to this 

 method of origin, on the ground of absence of stratification, not well 

 taken. (See Dana, 58; Davis, 81.) 



65. Dana, J. D. 



On the Taconic rocks and stratigraphy, with a geologi- 

 cal map of the Taconic region. 



Am. Jour. Sci., (3) xxix, 205-222, 437-443. niap (pi. ii), 

 1885. 



Presentation of facts bearing on the constitution, stratigraphical 

 relations, and distribution of Taconic rocks. Limestone is single form- 

 ation overlain by schist and quartzite and underlain by quartzite and 

 mica schist. Within the Taconic region metamorphism increases from 

 north to south and from west to east. 



66. Dana, J. D. 



On displacement through intrusion. 

 Am. Jour. Sci., (3) xxx, ZT\-y7(i, 1885. 



Description of the wedging action of intruding material, as shown 

 in specimens from Canaan and Lenox. 



