60 Introduction 



1885 



Hall, James. Palseontology, vol. v, part i. Lamellibranchiata ii, text 

 and plates, containing descriptions and tignres of the Dimyaria of the 

 Upper Helderberg, Hamilton, Portage, and Chemung groups. 



Geol. Survey of New York, Albany, 1885, 4to, pp. 269-562 -f Ixii; 34-80, 93-96 

 plates. 



1887 



Hall, James, assisted by Simpson, George B. Palseontology, vol. vi. 

 Corals and Bryozoa. Text and plates, containing descriptions and figures 

 of species from the Lower Helderberg, Upper Helderberg, and Hamilton 

 groups. 



Geol. Surv. of New York, Albany, 1887, 4to, 298 -f xxvi pp., 66 plates. 



1888 

 Hall, James. Palseontologj-, vol. v, part ii. Supplement containing 

 descriptions and illuptrations of Pteropoda, Cephalopoda, and Annelida. 

 Geol. Survey of New York, Albany, 1888, 4to, 42 pp., 114-129 plates. 



1889 

 Schuchert, Charles. A list of the fossils occurring in the Oriskany 

 sandstone of Maryland, New York, and Ontario. 



8th Ann. Rept. State Geologist [New York] for the year 1888, 1889, pp. 50-54. 

 42d Ann. Rept. New York State Mus. Nat. Hist., 1889, pp. 396-400. 



Clarke, John M. The Hercynian question. A brief review of its de- 

 velopment and present status, with a few remarks upon its relation to the 

 current classification of American Palfeozoic faunas. 



8th Ann. Rept. State Geologist [New York] for the year 1888, 1889, pp. 62-92. 



42(1 Ann. Rept. New York State Mus. Nat. Hist., 1889, pp. 408-438. 



1891 



Williams, George H. The geological excursion of University students 

 across the Appalachians in May, 1891. 



Johns Hopkins Univ. Cir., No. 94, vol. xi, 1891, pp. 25-28. 



Williams, Henry Shaler. Correlation papers — Devonian and Car- 

 boniferous. 



Bull. U. S. Geol. Survey, No. 80, 1891, 280 pp. 



House Misc. Doc, 52d Cong., 1st Sess., vol. xix, No. 24. 



