16 CAMBRIAN BRACHIOPODA. 



Davidson, T. — Continued . 



1884. A monograph of the British fossil Brachiopoda, vol. 5, pt. 3, Silurian and Devonian supplements, 1884 (Dec), 

 pp. 243^76, Pis. XVIII-XXI. 4°. London. 

 Davis, J. E.: 



1846. The Quarterly Journal of the Geological Society of London, vol. 2, pt. 1, 1846, pp. 70-75: On, the geology of 

 the neighbourhood of Tremadoc, Caernarvonshire. 

 Dawson, J. W.: 



1888a. The Canadian Kecord of Science, vol. 3, 1888 (Apr.), pp. 49-59: Preliminary note on new species of sponges 



from the Quebec group at Little Metis. 

 1888b. Peter Bedpath Museum, McGill University, Montreal, Canada: Notes on specimens, Apr., 1888, pp. 49-59: 



New species of fossil sponges from Little Metis, Province of Quebec, Canada. 

 1890. Proceedings and Transactions of the Royal Society of Canada for 1889, 1st ser., vol. 7, sec. 4, No. 3, 1890, 

 pp. 31-55: On new species of fossil sponges from the Siluro-Cambrian at Little Metis on the lower St. 

 Lawrence. 

 Delgado, J. F. N.: 



1904. Communicapoes de Commissao do Servigo geologico de Portugal, tome 5, fasc. 2, 1904 (Mar.), pp. 307-374: 



Faune cambrienne du Haut-Alemtejo (Portugal). 

 DwiGHT, W. B.: 



1886. Proceedings of the American Association for the Advancement of Science, 34th meeting, held at Ann Arbor, 



Mich., Aug., 1885; 1886, pp. 204-209: The discovery of fossiliferous Potsdam strata at Poughkeepsie, New 



York. 

 1889. American Journal of Science, 3d ser., vol. 38, 1889 (Aug.), pp. 139-153: Recent explorations in theWappinger 



Valley limestones and other formations of Dutchess County, New York. 

 1891 (?). Transactions of Vassar Brothers Institute and its scientific section for 1887-1890, vol. 5, pt. 2, 1891 (?), 



pp. 102-109: Discovery of fossiliferous strata of Middle Cambrian at Stissing, New York. 

 EicHWALD, C. E. von: 



1829. Zoologia specialis, quam expositis animalibus turn vivis, tum fossilibus potissimum Rossise in universum, 



et Polonise in specie, etc., vol. 1, 1829. 8°. Vilnse. 

 1840. Journal fur Natur- und Heilkunde der Medizinischen Akademie zu St. Petersburg, pts. 1 and 2, 1840, pp. 



1-210: Ueber das silurische Schichtensystem in Estland. 

 1842. Die Urwelt Russlands, Hft. 2, 1842, pp. 139-156: Ueber die Obolen und den silurischen Sandstein von 



Esthland und Schweden. 

 1843a. Beitrage zur Kenntniss des russischen Reiches, Bd. 8, No. 1, 1843, pp. 1-138: Neuer Beitrag zur Geognosie 



Esthlands und Finnlands. 

 1843b. Beitrage zur Kenntniss des russischen Reiches, Bd. 8, No. 2, 1843, pp. 139-156: Ueber die Obolen und 



den silurischen Sandstein von Esthland und Schweden. 



1859. Letheea rossica, ou Paleontologie de la Russie, ancienne p6riode, atlas, 1859. 4". Stuttgart. 



1860. Lethsea rossica, ou Paleontologie de la Russie, ancienne periode, vol. 1, sec. 2, 1860. 8°. Stuttgart. 

 Emmons, E.: 



1842. Natural history of New York, Geology, pt. 2: Survey of the second geological district, 1842. 4°. Albany, 



New York. 

 1855. American geology, vol. 1, pt. 2, 1855, pp. 1-251. 8°. Albany, New York. 

 1863. Manual of geology, 2d ed., 1863. 12°. New York. 

 Emmons, W. H.: 



1907. Bulletin United States Geological Survey No. 315, 1907, pp. 31-35: The Granite-Bimetallic and Cable 



mines, Phillipsburg quadrangle, Montana. 

 Etheridge, R., jr.: 



1896. Proceedings of the Royal Society of Victoria for 1895, new (2d) ser., vol. 8, 1896 (Apr.), pp. 52-64: The 



existence of a Cambrian fauna in Victoria. 



1905. Transactions and Proceedings and Report of the Royal Society of South Australia, vol. 29, 1905 (Dec), 



pp. 246-251: Additions to the Cambrian fauna of South Australia. 



Ford, S. W.: 



1871. The American Journal of Science and Arts, 3d ser., vol. 2, 1871 (July), pp. 32-34: Notes on the Primordial 



rocks in the vicinity of Troy, N. Y. 

 1873. The American Journal of Science and Arts, 3d ser., vol. 5, 1873 (Mar.), pp. 211-215: On some new species 



of fossils from the Primordial or Potsdam group of Rensselaer County, New York (lower Potsdam). 

 1878. The American Journal of Science and Arts, 3d ser,, vol. 15, 1878 (Feb.), pp. 127-129: Note on Lingulella 



cmlata. 

 1881. The American Journal of Science, 3d ser., vol. 21, 1881 (Feb.), pp. 131-134: Remarks on the genus Obolella. 



