PALAEONTOLOGY : EASTERN MASSACHUSETTS. 57 



1877. Dana, J. D. Note on the Helderberg formation of Bernardston, 

 Mass., etc. (Am. Journ. Sci., 3d ser., vol. 14, pp. 379-387.) 

 Discusses superposition and age of beds. 



1877. Hitchcock, C. H. Note upon the Connecticut valley Helderberg. 

 (Am. Journ. Sci., 3d ser., vol. 13, p. 313.) 



1883. "Whitfield, B. P. Observations on the fossils of the metamorphic 

 rocks of Bernardston, Mass. (Am. Journ. Sci., 3d ser., vol. 25, 

 pp. 368-369) with a note by Dana on the fossiliferous shale. 

 Mentions occurrence of over seven recognizable fossils in the 

 shaly quartzite and several species in the limestone below. 

 Regards limestone as middle Silurian and quartzite beds as 

 middle Devonian. 



1890. *Emerson, B. K. A description of the Bernardston series of meta- 

 morphic upper Devonian rocks. (Am. Journ. Sci., 3d ser., vol. 

 40, pp. 263-275, 363-374.) Note by J. D. Dana. Elaborate dis- 

 cussion of the beds and their relations. Most abundant and 

 characteristic fossils are Chemung with Hamilton forms. 



3. Carbonic. 



1844. Teschemacher. Ferns from coal of Mansfield, Mass. (Bost. Soc. 

 Nat. Hist., Proc, vol. 1, p. 62.) Mentions occurrence of seven 

 species of ferns in fine state of preservation. Note by C. T. 

 Jackson. 



1851. Jackson, C. T. Note on a fossil Calamite from "Bridge-water, 

 Mass. (Bost. Soc. Nat. Hist., Proc, vol. 3, p. 223.) Brief de- 

 scription of specimen. 



1880. * Crosby, W. 0. and Barton, G. H. Extension of Carboniferous 



formation in Massachusetts. (Am. Journ. Sci., 3d ser., vol. 20, 

 pp. 416-420.) Fossil Calamites and Sigillaria (?) found at Rock- 

 dale, Mass. Represented by hollow moulds in rock. 



1881. Barton, G. H. Norfolk County basin, Mass. (Science Observer, 



vol. 3, pp. 41-42.) 



1885. Perry, Joseph. Note on a fossil coal plant found at the graphite 

 deposit in mica-schist at Worcester, Mass. (Am. Journ. Sci., 

 3d ser., vol. 29, pp. 157-158.) Two specimens of Lepidodendron 

 acuminatum from mica-schist surrounding granite knoll. 



1887. Kemp, J. F. Fossil plants and rock specimens from Worcester, 

 Mass. (N. Y. Acad. Sci., Trans., vol. 4, pp. 75-76.) Notice of 

 Perry's plants from Worcester. 



1894. * Woodworth, J. B. Carboniferous fossils in the Norfolk County 

 basin. (Am. Journ. Sci., 3d ser., vol. 48, pp. 145-148.) At Can- 

 ton Junction occur Calamites, Sigillaria and fern stems. 



1896. Fuller, Myron L. A new occurrence of Carboniferous fossils in 

 the Narragansett basin. (Bos. Soc. Nat. Hist., Proc, vol. 27, 

 pp. 195-199.) Occurrence of Calamites and Sigillaria (?) at 

 Brockton, Mass. 



