284 REPORT ON NATIONAL MUSEUM. 



Dall, William Healey. — Land shells of Gibraltar. 



(Science, vol. n, p. 663. ) 



Absorption of the shell in Auriculidae. 



(i&id., p. 663.) 



Organization of chitons. 



(/bid., p. 691.) 



Pulmonata of Central Asia. 



(Ibid., p. 721.) 



Mediterranean oysters. 



(IW<?.,p.721.) 



Mollnsks at the Fisheries Exhibition. 



(Bid., p. 721.) 



Abyssal mollusks. 



(i&i<f.,p.748.) 



Further researches on Nudibranchs. 



(2Wd.,p.748.) 



Extra marine mollusks of New Guinea. 



(Ibid., p. 773.) 



Structure of the oyster shell. 



(i7>id.,p.773.) 



. Spinning by Arion hortensis. 



(Ibid., p. 773.) 



Fossils of Pachino. 



(J&id., p. 803.) 



Spicula amoris of British Helices. 



(Ibid., p. 803.) 



Shell structure of Chonetes. 



(I6id.,p.803.) 



Dewey, Fred. P. — The condition and prospects of the department 

 of metallurgy and economic geology in the U. S. National Mu- 

 seum. 



(Rep. Asst. Director U. S. Nat. Mue. for 1882, 1883, pp. 34, 37, 105 ; Smitbson- 

 ian Report for 1882, 1884, pp. 152-155, 223. ) 



Biographical sketch of the late Dr. George Wesson Hawes. 



(Smithsonian Report for 1882, pp. 35-38.) 



Some practical applications of combustion. 



(Journ. U. S. Assoc, of Charcoal Iron Workers, April, 1883, vol. rv, pp. 

 105-115.) 

 Gives a review of the applications of heat. 



