10 Dr. G. T. Prior — Progress of Mineralogy. 



"New Lower Cambrian Subfauna." Cambrian Geology and Paleonto- 

 logy, ii. Smithsonian Misc. Coll., vol. lvii, No. 11, Publ. 2185, 

 pp. 309-26, pis. 1-iv, July 21, 1913. 



" Cambrian Formations of the Bobson Peak District, British Columbia 

 and Alberta, Canada." Ibid., No. 12, Publ. 2186, pp. 327-43, 

 pis. lv-lix, July 24, 1913. 



' ' The Cambrian Faunas of China ' ' : Besearch in China, Carnegie 

 Institution of Washington, vol. iii, Publ. No. 54, pp. 1-375 (incl. 

 Index), pis. 1-29, text-figs. 1-9. 



1914. ' ' Dikelocephalus and other Genera of the Dikelocephalinse. ' ' Cambrian 



Geology and Paleontology. Smithsonian Misc. Coll., vol. lvii, 

 No. 13, Publ. 2187, pp. 345-498 (with Index to entire vol.), 

 pis. lx-lxx, text-figs. 13-20, April 4, 1914. 

 " Pre- Cambrian Algonkian Algal Flora." Ibid., vol. lxiv, No. 2, 

 Publ. 2271, pp. 77-156, pis. iv-xxiii, July 22, 1914. 



1915. " The Cambrian and its Problems in the Cordilleran Begion : Problems 



of American Geology" : Dana Commemorative Lectures (delivered 

 Silliman Foundation, December, 1913, Yale University), Yale 

 Univ. Press, ch. iv, pp. 162-233, pis. i, ii, text-figs. 1-8. 

 " Discovery of Algonkian Bacteria " (presented to National Academy of 

 Sciences, April 9, 1915) : Proc. Nat. Acad. Sci., vol. i, pp. 256-7, 

 text-figs. 1-3. 



1916. "Cambrian Trilobites." Cambrian Geology and Paleontology, iii. 



Smithsonian Misc. Coll., vol. lxiv, No. 3, Publ. 2370, pp. 157-256, 



pis. xxiv-xxxviii, January 14, 1916. 

 " Belations between the Cambrian and Pre-Cambrian Formations in 



the Vicinity of Helena, Montana." Ibid., No. 4, Publ. 2416, 



pp. 259-301, pis. xxxix-xliv, text-figs. 10-13, June 24, 1916. 

 " Cambrian Trilobites." Ibid., No. 5, Publ. 2420, pp. 303-570 (incl. 



Index), pis. xlv-lxvii, September 29, 1916. 

 "Evidences of Primitive Life": Smithsonian Beport for 1915, 



pp. 235-55, pis. i-xviii, Publ. 2389. 



1917. " The Albertella Fauna in British Columbia and Montana." Cambrian 



Geology and Paleontology, iv. Smithsonian Misc. Coll., vol. lxvii, 

 No. 2, Publ. 2445, pp. 9-59, pis. i-vii, May 9, 1917. 

 " Fauna of the Mount Whyte Formation." Ibid., No. 3, Publ. 2480, 

 pp. 61-114, pis. viii-xiii, September 26, 1917. 



1918. "Appendages of Trilobites." Ibid., No. 4, Publ. 2523, pp. 



pis. xiv-xlii, 3 text-figs, (in the press). 



II. — Review of Progress or Mineralogy prom 1864 to 1918. 



By G. T. Prior, M.A., D.Sc, F.B.S., Keeper of the Mineral Department of 

 the British Museum (Natural History). 



A BRITISH MUSEUM official may perhaps be pardoned if, in 

 a review of the progress of mineralogy since the first 

 appearance of the Geological Magazine, he begins with a reference 

 to scientific work done in the Museum with which the Editor was so 

 long associated. At the time when the Magazine first saw the light 

 the Keeper of the Mineral Department was the late Professor Nevil 

 Story-Maskelyne. He was one of the first to grasp that efficient 

 tool for deciphering mineral aggregates which had been provided by 

 JSTicol and Sorby in the thin-section. He was engaged in the 

 particular work to which Keepers of that Department have since 

 appeared to consider they must in duty bound devote much of their 

 time and energy, viz. the investigation of meteorites, and, assisted 

 by the microscopic examination of thin slices of these bodies, he was 



