REPORT OF THE SECRETARY. 99 



Some considerations on sight in bii'ds. By J. C. Lewis. 9 pp. 5 pis. (Publ. 



2463.) 

 Pirates of the deep : Stories of the squid and octopus. By Paul Bartsch. 29 pp. 



19 pis. (Publ. 2464.) 

 The economic importance of the diatoms. By Albert Mann. 10 pp. . 6 pis. 



(Publ 2465.) 

 Narcotic plants and stimulants of the ancient Americans. By W. E. Safford. 



38 pp. 17 pis. (Publ. 2466.) 

 New archeological lights on the origins of civilization in Europe. By Arthur 



Evans. 21 pp. (Publ. 2467.) 

 The great dragon of Quirigua. By W. H. Holmes. 14 pp. 10 pis. (Publ. 2468.) 

 A prehistoric Mesa Verde pueblo and its people. By J. W. Fewkes. 27 pp. 



15 pis. (Publ. 2469.) 

 The art of the great earthwork builders of Ohio. By Charles C. Willoughby. 



12 pp. 13 pis. (Publ. 2470.) 

 A half century of geographical progress. By J. Scott Keltie. 21 pp. 2 pis. 



(Publ. 2471.) 

 The relation of pure science to industrial research. By J. J. Carty. 9 pp. 



(Publ. 2471.) 

 Mine safety devices developed by the United States Bureau of Mines. By 



Van H. Manning. 12 pp. 7 pis. (Publ. 2472.) 

 Natural waterways in the United States. By W. W. Harts. 34 pp. 9 pis. 



(Publ. 2473.) 

 Theodore N. Gill. By William H. Dall. 8 pp. 1 pi. (Publ. 2474.) 

 The life and work of Fabre, by E. L. Bouvier. 11 pp. (Publ. 2475.) 



REPORT FOR 1917. 



The report of the executive committee and proceedings of the 

 Board of Regents of the Institution and report of the secretary, both 

 forming part of the annual report of the Board of Regents to Con- 

 gress, were issued in pamphlet form in December, 1917 : 



Report of the executive committee and proceedings of the Board of Regents of 

 the Smithsonial Institution for the year ending June 30, 1917. 17 pp. (Publ. 

 2488.) 



Report of the secretary of the Smithsonian Institution for the year ending 

 June 30, 1917. 110 pp. (Publ. 2487.) 



The general appendix of the report for 1917, which is now in press, 

 contains the following papers : 



Projectiles containing explosives, by A. R. Commandant. 



Gold and silver deposits in North and South America, by Waldemar Lindgren. 



Composition and structure of meteorites compared with that of terrestrial 



rocks, by George P. Merrill. 

 Corals and formation of coral reefs, by Thomas Wayland Vaughan. 

 The correlation of the Quanternary deposits of the British Isles with those of 



the continent of Europe, by Charles E. P. Brooks. 

 Floral aspects of the Hawaiian Islands, by A. S. Hitchcock. 

 Natural history of Paradise Key and the near-by everglades, by W. E. Safford. 

 Notes on the early history of the pecan in America, by Rodney H. True. 

 The social, educational, and scientific value of botanic gardens, by John Merle 



Coulter. 



