[1920.] 



20 



CLARK, W. B., 2, M. T. Goldman, & others. The Upper Cretaceous Deposits of 

 Maryland. Maryland Geol. Surv. 2 vols. Pp. 1-901. figs., pis. i-xc r geol. 

 map]. 1916. 



3, E. B. Mathews, & E. W. Berry. The Surface and Underground "Water 



Resources of Maryland, including Delaware and the District of Columbia. 



Maryland Geol. Surv. x. pp. 171-553, figs. 1918. 



. Obit.— See Axon., 3 ; Emerson, B. K., 2 ; 4" Mathews, E. B. 



CLARK, W. 0. Ground Water for Irrigation in the Morgan Hill Area, California. 



Water-Supply Papers, U.S. Geol. Surv. no. 400, pp. 61-108, figs., pis. v-vii 



[maps J. 1917. 



CLARKE, E. de C. Geological Notes on the Leonora-Duketon District, Mount 

 Margaret Goldfield. Ann. Rep. Geol. Surv. W. Austr. 1918. pp. 18-19. 

 1919. 



2. The Bauxites of the Darling Ransre — South- West Division. Ann. Sep. 



Geol. Surv. W. Austr. 1918, pp. 19-22." 1919. 

 3. Molvbdenite near Leonora. North Coolgardie Goldfield. Ann. Rep. Geol. 



Surv. W. Austr. 1918, p. 22. 1919. 

 4. Irwin River Coalfield — South- West Division. Ann. Rep. Geol. Surv. 



W. Austr. 1918, p. 22. 1919. 

 5. Reported Occurrence of Oil near Pingelly, South- West Division. (With 



Appendix bv E. S. Simpson.) Ann. Rep. Geol. Surv. TT. Austr. 1919, 



pp. 15-16. 1920. 



6. The Wallangie Gold Find on the Kurrawang Woodline. Coolgardie Gold- 

 field. Ann. Rep'. Geol. Surv. IT'. Austr. 1919, pp. 16-19. 1920. 



■ 7. The Emu G.M.L.. Menzies, North Coolgardie Goldtield. Ann. Rep. Geol. 



Surv. W. Austr. 1919. pp. 19-20. 1920. 



8. Geology and Ore-deposits of New Commodore G.M., Meekatharra, Murchi- 



son Goldfield. Ann. Rep. Geol. Surv. TT. Austr. 1919. pp. 20-24. 1920. 



9. Kearn's Workings on Old Commodore North Lease, Meekatharra, Murchi- 



son Goldfield. Ann. Rep. Geol. Surv. TT. Austr. 1919, p. 24. 1920. 



10. Summarv of New Geological Features noted at Meekatharra, Murchison 



Goldfield, March 1919. Ann. Rep. Geol. Surv. W. Austr. 1919, pp. 24-25. 

 1920. 



11. Geology of Pavne's Find (Goodinsrnow) — Yalsroo Goldfield. Ann. Rep. 



Geol. Surv. W. Austr. 1919, p. 25. 1920. 

 • 12. Geologv of Rothesav — Yaleoo Goldfield. Ann. Rep. Geol. Surv. TP. Austr. 



1919, p. 25. 1920. 



13. Geologv of Melville (Noonscal) — Yalsoo Goldfield. Ann. Rep. Geol. Surv. 



W. Austr. 1919, pp. 25-26. 1920. 

 14. Selection of Bore Site in Irwin River. Ann. Rep. Geol. Surv. Tf~. Austr. 



1919, p. 26. 1920. 



15. Reservoir Site near Eradu. Ann. Rep. Geol. Surv. TT". Austr. 1919. 



p. 26. 1920. 



CLARKE, F. W. The Data of Geochemistrv. 4th Edition. Bull. U.S. Geol. 



Surv. no. 695. pp. 1-832. 1920. 

 2. & W. C. Wheeler. The Inorganic Constituents of Marine Invertebrates. 



Prof. Papers, U.S. Geol. Surv. no. 102, pp. 1-56. 1917. 

 CLARKE, J. M. The Great Glass-Sponge Colonies of the Devonian : their Origin, 



Rise, and Disappearance. Journ. Geol. xxviii. pp. 25-37, figs. 1920. 

 2, & W. D. Matthew. Supposed Fossil Horse from the late Pleistocene +'ound 



at Monroe. Orange Count v, New York. [Abstract.] Bull. Geol. Soc. Am. 



xxxi. p. 204. 1920. 



CLELAND, H. F. Memorial of Henry Shaler Williams. Bull. Geol. Soc. 



Am. xxx. pp. 47-65, pi. v [portrait]. 1919. 

 CLERICI, E. In Occasione del Centenario dell' Opera di Giovanni Battista 



Brocchi : 'Dello Stato fisico del Suolo di Roma.' Boll. Soc. geol. ital. 



xxxviii. pp. lxxxiii-xciii, figs. 1920. 

 2. Sulle Marmitte nel Tufo al Fosso della Mandriola presso Roma. Boll. 



Soc. geol. ital. xxxix. pp. xxxv-xxxvii, figs. 1920. 

 CLOGS, H. Tektonische Probleme am Nordrand des Harzes. Geol. RundscJi . vii. 



pp. 314-329, figs. 1917. 

 2. Ueber die Raumbildung plutonischer Massen. Zeitschr. deutscJi. geol. 



Gesellsch. Ixx. Monatsb. pp. 3-6. 1918. 

 CLOUGH, C. T., J. S. G. Wilson. & others. The Economic Geology of the Central 



Coalfield of Scotland, description of Area VII, including the district of Ruther- 



glen, Hamilton, and Wishaw. Mem. Geol. Surv. Scotland, pp. 1-144, figs., . 



pis. i-vi, geol. sections. 1920. 



