XVlll BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



CORRECTIONS AND INSERTIONS 



All contributors to volume 29 have been invited to send corrections and in- 

 sertions to be made in their papers, and the volume has been scanned with 

 some care by the Editor. The following are such corrections and insertions as 

 are deemed worthy of attention : 



Page 239, line 9 from l)ottom, insert comma after word "interior" 



" 243, line 14 from bottom, for "stretches" read scratches 



" 281, line 3 from bottom, for "50 degrees" read 15 degrees 



" 288, line 7 from top, for "50 degrees" read 15 degrees 



" 294, line 15 from bottom, for "Calabasis" i^ead Calabasar 



" 295, line 16 from top, for "Calabasis" read Calabasar 



" 327, line 5 from top, after "Presented" insert by title. 



Note. — This paper is a subdivision of the paper by the same author entitled 

 "Further studies in the New York Siluric," an abstract of which is on page 92. 



Page 329. A remeasurement recently made of the section at Rochester 

 gives : 



Feet Inches 



Irondequoit limestone 18 4 



Williamson shale 5 8 



Sodus shale .• 13 4 



Reynales limestone. 15 3 



Furnaceville iron ore 1 



Bear Creek ( ?) beds 2 10 



Maplewood shale 18 



Thorold ( ?) sandstone 3 2 



Grimsby red sandstone 53 



The Medina base rests on eroded, thrust-faulted Queenston. 

 Page 339, i^isert reference to Bulletin 69, New York State Museum : pp. 1167- 

 1169 (Hartnagel) for section on Wheelocks Creek, tributary to 

 Moyer Creek. 



" 342, line 1 from top, for ''Lcptodesma rJiomhoidea" read Leptodesma 

 rhom'boideum 



" 343, line 6 from top, for "Paloeoglossa'' read Palwoglossa 



" 344, line 2 from top, for "probably" read possibly 



" 347, insert at bottom of page the following : The thin interleaved lime- 

 stones in the supposed Wolcott shale above the oolitic ore at 

 Clinton carry: 



Palwocyclus rotuloides (abundant) 

 Acantkoclema asperumf 

 Leptcena rho7riboidaUs 

 Plectamhonites elegantulus? 

 Gamarotocchia neglecta? 

 Atrypa reticularis 

 Crinoids 

 Dalmanites aff. limulurns (nov. ?) 



