-^ Ithaca Group 53 



1886. Williams, H. S. Notes on the fossil fishes of the Gen- 

 esee and Portage black shales; Bull. Buffalo Soc. Nat. Sci., 



vol. V, No. I, pp. 81-84. ^ r ^.t,^ 



1887 Clarke, J. M. Annelid teeth from the lower part of the 

 Hamilton group and from the Naples shales of Ontario 

 county, New York; 6th Ann'l Rep't State Geol., pp. 30-32. 



1887. Williams, H. S. On the fossil faunas of the Upper De- 

 vonian-the Genesee sedlion. New York; Bull. U. S. Geol. 

 Surv., No. 41, pp. 1-121, pis. 1-4- 



1887. Williams, H. S. A revision of the Cayuga Lake seAion 

 of the Devonian; Proc. Amer. Assoc. Adv. Sci., vol. xxxv, 



1887^' Wniiams. H. S. The Strophomenidse; a pateontological 

 studv of the method of initiation of genera and species; 

 Proc Amer. Assoc. Adv. Sci., vol. xxxv. p. 227. 



1888. Ashburner, C. A. Petroleum and natural gas m New 

 York State; Trans. Amer. Inst. Min. Engineers, vol. xvi, p. 



i888^^^Prosser, C. S. The Upper Hamilton of Chenango and 

 Otsego counties; Proc. Amer. Assoc. Adv. Sci., vol. xxxvi, 



1888^" Hall, Jas. and Clarke, J. M. Palaeontology of New York, 

 vol. vii, text and plates. . , -r^ 



1888. Williams, H. S. The different types of the Devonian 

 System in North America; Amer. Jour. Sci., vol. xxxv, pp. 



i889^'"ciarke, J. M. The genus Bronteus in the Chemung 

 rocks of New York; 8th Ann'l Rep't State Geol., pp. 57-59- 



1889. Williams, H. S, On the relation of the Devonian faunas 

 of Iowa; Amer. Geol., vol. iii, pp. 230-233. 



1800. Williams, H. S. The Cuboides zone and its fauna; a dis- 

 . cussion of methods of correlation; Bull. Geol. Soc. of Amer., 



pp. 481-500, pis. 11-13- , . . ^ 1 ^- 



1890 Hall, Jas. On the genus Spirifera and its interrelations 



with the genera Spiriferina, Syringothyris, Cyrtia and Cyr- 



tina; Bull. Geol. Soc. of Amer., vol. 1, pp. 567-568. 



i8qo Hall Jas. New forms of Dictyospongidse from the rocks 



^ of the Chemung group; Bull. Geol. Soc. of Amer., vol, 1, 



TRnn^^Pm'sler C S The thickness of the Devonian and Silu- 

 'riaif rocks' of" western central New York; Amer. Geol.. vol. 

 vi, pp. 199-201. 



