CORRECTIONS TO BE INSERTED IN SMITHSONIAN MIS- 

 CELLANEOUS COLLECTIONS, VOLUME LIIL 



Note.— This slip is so arranged that it may be torn apart and pasted in 

 papers Nos. i, 2, and 3. 



CAMBRLAN OEOLOCY AND PALKONTOLOCY. WAIXOTT. 



No. I. — NoMF;Ncr..ATt'Riv oi' SoMiv Cambrian CoRnri.i.TvRAN 1''orm ations. 



Page 2. Tiie Mount Wliyte formation which is place<l in the Middle Cambrian 

 on page 2 should be in the Lower Cambrian as indicated on page 4. 



CAMBRIAN GEOLOGY AND PALEONTOLOGY. WALCOTT 



No. 2, -Cambrian Trii,obitf;s. 



Page 22. J7th line, strike out "Wnlsey." 



" 22. l8th line, (2.5 km.) should read (6.44 km.) 



" 26. 4th and 5th lines, ^ 



" 30. 9th and lOth lines, 1 (9.37 km.) and (3.12 km.) should read (24.14 



" 42. 43d and 44th lines, [ km.) and (8.05 km.), respectively. 



" 46. 29th and 30th lines, J 



" 33- 33d line, " 



" 35. 6th line, 



" 35. 28th line, 



" 38. 41st line, 



42. 27 me, J ^ should read (i.6[ km.) 



" 44. 27th Ime, \ 



> (605-653.8 m.) should read (577.6-652.3 m.) 



CAMBRIAN GEOLOGY AND PALEONTOL(K'.Y. \VALC< )TT. 



No. 3.— Cambrian Brachiohoda : Descriptions oi- Nkw Gknkra anh SrivCii's. 



Page 57. 32d line, "base of tlie Wolsey shale" should read "top of the 

 quartzitic sandstones." 

 " 101. 18th line, strike out "Wolsey." The shale mentioned on these pages 

 is not the equivalent of the Wolsey shale. 



