66 REPORT OP THE COMMISSIONER OF FISHERIES. 



oughly overhauled, all of the upper works above the iron hull beuig 

 removed and replaced with new material. A new boiler was installed, 

 engines put in first-class condition, new interior fittings provided, 

 and certain modifications made in the arrangement of space which 

 will add to the efficiency and convenience of the vessel. As the iron 

 hull is considered to be as good as when built, it is believed that many 

 years' service can be expected from the Fisli Hawlc with no extra- 

 ordinary expenditures. 



The schooner Grampus and the smaller vessels of the Bureau have 

 been engaged as heretofore in fish-cultural work in connection with 

 the various stations. 



PUBLICATIONS AND LIBRARY. 



A new series of publications of the Bureau has been established 

 ill a form designated "Economic Circular." These brief papers are 

 intended primarily to be the medium of prompt report upon the 

 main features and practical results of W'Ork for which a more com- 

 plete account requh'ing much more time in- preparation will appear 

 later. Economic Cu'cular No. 1, "Condition of the mussel beds of 

 the Cumberland River m 1911," issued February 13, 1912, and dis- 

 tributed among the mussel fishermen and button makers, was the 

 only paper of this series issued during the past fiscal year, but others 

 of the same character were ready to appear shortly thereafter. 

 Through this series of chculars it will also be possible to publish brief 

 notices of other unportant subjects not requii'mg detailed mvesti- 

 gation or discussion but valuable as information m particular 

 branches of the fishing industries. 



The following documents relatmg to the Bureau's work were 

 issued during the year and seven of previous issue were reprinted: 



Natural history of the American lobster. By Francis H. Herrick. From Bulletin, 

 vol. XXIX, 1909, p. 149-408, pi. xxviii-xlvii, 42 text fig. Document 747, issued 

 July 28, 1911. 



Special investigation of the fur-seal rookeries in 1910. By Harold Heath. Docu- 

 ment 748, 22 p., issued November 10, 1911. 



The fur-seal fisheries of Alaska in 1910. By V/al(er I. Lembkey. Document 749, 

 40 p., issued November 8, 1911. 



The salmon fisheries of the Pacific coast. By John N. Cobb. Document 751, 182 

 p., issued November 25, 1911. 



Effects of explosive sounds such as those produced by motor boats and guns upon 

 fishes. By G. H. Parker. Document 752, 10 p., issued October 12, 1911. 



Report of the Commissioner of Fisheries for the fiscal year ended June 30, 1911. 

 Document 753, 70 p., issued February 23, 1912. 



Fishes from Bering Sea and Kamchatka. By C. H. Gilbert and C. V. Burke. 

 From Bulletin, vol. xxx, 1910, p. 31-96, 37 text fig. Document 754, issued May 

 6, 1912. 



Sound as a directing influence in the movements of fishes. By G. H. Parker. 

 From Bulletin, vol. xxx, 1910, p. 97-104. Document 755, issued April 27, 1912. 



