SUBJECT INDEX 423 



Xower Heidelberg' group (coiidinird) 



33 Platos and Explanations ilhistrnlins Corals and Bryo- 



zoans of Upper and Lower Ilelderber^ (Jioups. Geo!. r(>p. 2 (for 



1S82) 1SS3. 

 Hall. Tlie Nia.^ara and T^ower Tlelderberp; Crouijs: tlieir Kelntions and 



Geographical Distribution in the United States and Canada. Mus. 



rep. 27 (for 1873) 1875. p.117-31. map 70xr)0cm. 



Hall. 8ome Remarkable Crinoidal Forms from the Lower Helderberg 

 Group. Mus. rep. 28 (for 1874) 1879. p.205-10. pl.35-37. 



Hall t^' Simpson. Corals and Bryozoa of the Lower Helderberg Group. 

 Pal. N. Y. 1SS7. 0:1-08. pl.1-24. 



Hall. Description of New Species of Fenestellidae of the Lower Helder- 

 berg, with explanation of plates illustrating species of the Ilamiltim 

 group. Mus. rep. 41 (for 1887) 1888. p.393-94. pl.8-15. 



Lincklacn. Lower Hemerberg Limestones. Fossils. Mus. rep. 14 (for 

 1860) 1861. p.58-59. 



Lincoln. Lower Helderberg Group. Geol. rep. 14 (for 1894) 1895. p.S7. 

 Same, Mus. rep. 48 (for 1894) 1895. 2:87. 



Luther. Lower Helderberg Group in Livonia Salt Shaft. Geol. rep. 13 

 (for 1893) 1894. p.48. Same, Mus. rep. 47 (for 1893) 1894. p.242. 



Luther. Lower Helderberg Group of Onondaga Countj-. Geol. rep. 15 

 (for 1895) 1897. p.267-74. Same, Mus. rep. 49 (for 1895) 1898. 2:267-74. 



Merrill. Lower Helderberg Group. Mus. bul. 19. 1898. p. 157-58. Same, 

 Mus. rep. 51 (for 1897) 1899. 1:157-58. 



Smock. Lower Helderberg Group. Mus. bul. 3. 1888. p.22; 10. 1890. 

 p.212. 



revised by Merrill. Mus. bul. 15. 1895. p.427-28. Same, Mus. 



rep. 48 (for 1894) 1895. 1:427-28 (2d paging). 



revised by Merrill. Mus. bul. 19. 1898. p. 201. Same, Mus. rep. 



51 (for 1897) 1899. 1:201. 



Smock. Quarries. Mus. bul. 3. 1888. p.94-134; 10. 1890. p.238-55. 



revifted by Merrill. Mus. bul. 15. 1895. p.432-47. Same, Mus. 



rep. 48 (for 1894) 1895. 1:432-47 (2d paging). 



Williams. Note on the Lower Helderberg Rocks of Cayuga Lake. Geol. 

 rep. 6 (for 188(1) 1887. i).lO-12. 



See also Becraft limestone: Cocymans limestone; Helderberg limestones; 

 Helderbergian; New Scotland limestones. 



liOwer Pentamerus limestone. See Coeymans limestone; Pentamerus lime- 

 stone. 



liower shaly beds. Darton. LoAver Shaly Beds. Geol. rep. 13 (for 1893) 

 1894. p.213. Same, Mus. rep. 47 (for 1893) 1894. p.407. 



Darton. Lower Shaly Limestone of Ulster County. Geol. rep. 13 (for 

 1893) 1894. p.3()4-5. Same, Mus. rep. 47 (for 1893) 1894. p.498-99. 



Xower Silurian (Champlainic; Ordovician). Cumings. Lower Siluriau 

 System of Eastern Montgomery County. N. Y. Mus. bul. 34. 190 >. 

 p.415-(t8. 4pl. (jdiot.) map. Same, Mus. rep. 54 (for 1900) 1902. 1:415-68. 

 4pl. (phot.) map. 

 Geologic map of Amsterdam quadrangle, 44x32. 5cm. 



Hall. Organic Remains. Pal. N. Y. y.l. 1847. 



Merrill. Lower Silurian System. Mus. bul. 19. 1898. p. 146-50. Same, 



Mus. rep. 51 (for 1897) 1899. 1:14(V50. 

 MeiTill. Life of the Lower Silurian. Mus. bul. 19. 1898. p.l50. Same, 



Mus. rep. 51 (for 1897) 1899. 1:150. 



Prosser A: Cumings. Sections and Thickness of the Lower Silurian 

 P'ormations on West Canada Creek and in the Mohawk Valley. (tCoI. 

 rep. 15 (for 1895) 1897. p.23-24. 615-59. pi. (phot.) Same, :\Ius. rep. 49 

 <for 1895) 1898. 2:23-24, 615-59. pi. (phot.) 



