62 



and on the roof floor railings of the new building of the Interior 

 Department. Other similar localities, cited by Professor Shrock 

 (2), are in Madison, Wisconsin, Chicago, Illinois, and Blooming- 

 ton and Bedford, Indiana. 



Pertinent Literature: — (1) E. R. Cumings et al., "Fauna of 

 the Salem limestone," 30th Ind. Rept., 1905, p. 1199.— J. W. 

 Beede et al., "Geology of the Bloomington Quadrangle," 39th 

 Ind. Rept., 1915, pp. 204-206, E. R. Cumings, "Nomenclature 

 and Description of the geological formations of Indiana," Hand- 

 book of Indiana Geology, Pt. IV, 1922, p. 504. 



(2) R. R. Shrock, "Probable worm castings ('coprolites') 

 in the Salem limestone of Indiana," Proc. Ind. Acad. Sci. for 

 1934 (1935), Vol. 44, pp. 174-175, Figs. lA-C, included in 

 "Invertebrate Paleontology," which appeared in the fall of 

 1935, by W. H. Twenhofel and R. R. Shrock, McGraw-Hill 

 Book Company, Inc., 1935, p. 137, Fig. 43A. 



(3) R. R. Shrock, "Fossil Algae from the Salem limestone 

 (Indiana Building Stone) of Indiana," Science 87, 2263, pages 

 438-439, May 13, 1938. 



(4) Hyppolyt J. Haas: "Die Leitfossilien," Veit & Comp., 

 Leipzig, 1887, pp. 283-284, and Fig. 509. Also Strasburger et 

 als., "A Textbook of Botany," Macmillan and Co., Ltd., Lon- 

 don, 1912, p. 363. 



(5) Report of Voyage of H. M. S. Challenger (during the 

 years 1873-76), Zoology, Vol. XII. Text, pp. 198-205. Plate 

 XXXI. Fig. 1. 



Washington, D.C. 



