30 CONNECTICUT GEOL, AND NAT. HIST. SURVEY. [Bull. 



103. Dewey, C. 



A sketch of geology and mineralogy of the western part 

 of Massachusetts and a small part of the adjoining states. 



Am. Jour. Sci., (i) viii, 1-60, 240-244, map, 1824. 



Description of the occurrence, general relations, and character of 

 the mica slate, granular limestone and quartz rock found in the north- 

 western part of Connecticut. Mentions the following minerals: garnet, 

 staurotide, schorl, cyanite, tremolite, nephrite, calcareous tufa, clay, 

 some zinc mineral, also iron ores from Salisbury. 



104. Dobson, P. 



Remarks on bowlders. 



Am. Jour. Sci. (i), x, 217, 218, 1826. 



Description of sandstone bowlders worn smooth on one side and 

 exhibiting scratches and furrows on the abraded part, found below as 

 well as at the surface. " Have been worn by being suspended and 

 carried in ice, over rocks and earth, under water." (See Dobson, 105.) 



(The observations of Peter Dobson, a cotton manufacturer of 

 Vernon, were keen, and his views of glaciation were far in advance 

 of his time. Mr. Dobson received the enthusiastic endorsement of 

 Murchison in the Annual Address of the Geological Society of London, 

 1S42.— Ed.) 



105. Dobson, P. 



Hints on the iceberg theory of drift. 



Am. Jour. Sci. (i), xlvi, 169-172, 1844. 



Describes striated, subangular bowlders, which indicate work of ice, — 

 presumably icebergs. (See Dobson, 104.) 



(This letter of Mr. Dobson's was written to Prof. Hitchcock, Novem- 

 ber 15, 1837, and sent to the American Journal of Science in 1844. — 

 Ed.) 



106. Dorsey, C. W., and Bonsteel, J. A. 



Soil survey in the Connecticut valley. 



U. S. Dept. Agric, Bur. Soils, Rept. Field Oper. for 

 1899, 125-140, 6 pis., map, 1900. 



The area described in Connecticut extends from Glastonbury to the 

 Massachusetts line, and from the eastern crystallines to the Talcott 

 range. Tobacco soils are described in detail under the headings: Tri- 

 assic stony loam; Holyoke stony loam; Windsor sand; Hartford stony 

 loam; Podunk fine sandy loam; Connecticut meadows; Enfield sandy 

 loam; Suffield clay; Elmwood loam; Connecticut swamp. 



107. Eaton, G. F. 



Notes on the collection of Triassic fishes at Yale. 



Am. Jour. Sci., (4) xv, 259-268, 18 figs., 1903. 



The following species are described: Semionotus fultus; S. microp- 

 terus; S. Marshi; S. tenuiceps; S. ovatus; Catopterus gracilis. Semi- 

 onotus micropterus is known only from Connecticut. 



