Directions for collecting and 



Pfeservlng fish Doc, 30. 

 Directory of officers: 



Smithsonian Institution Doc. 39. 



National Museum Doc. 39, 



Geological Surrey Doc. 39. 



Fish Commission Doc. 39. 



Diaeasffiof fishes Doc. 431, 498, 533, 578, 1061; I.R. 25, 



Bacterial Doc. 924. (35. 



Bacterium truttao Doc. 533. 



Carcinoma of thyroid Doc, 790^. 



Fresh-water fishes Doc. 824. 



Fungus Doc. 691, 692, 693. 



Gas Doo. 578. 



Halibut, mushy Doc, 817, 957. 

 Ichthyophthirius disease of fishes 



and methods of control Doc, 959. 



Lobster fry Doc. 554. 



Octomitus Doc, 988. 



Pond fishes Doc. 826. 



Schizamoeba Doc. 987. 



Trout (See Parasites) Doc. 533, 689, 690, 694, 699, 818, 



987, 988, 1061. 



Distribution, fishes Doc. 86. 

 Distribution of fish and fish eggs by 



U. S. Fish Commission Doc. 179, 630, 644, 728, 740, 770, 



794, 808, 828, 837, 846, 863, 878. 906, 912, 

 941, 941a, 1011, 1098 (See Propagation) 



L'ethod employed by Bureau Doc. 826, 1056; F.C.8. 



District of Columbia fishes Doc. 409. 



Dogfish, destructivenass Doc. 622. 

 Directive influences, sense 



of smell Doc. 798. 



Food value Doc. 622, 655. 



Sense organs Doc. 738, 798, 



Utilization of Doc, 622. 



Doolittle, A. A. Doc. 633. 

 Douglas Lake, Mich., ecological 



survey, midsummer Doc, 814. 



Douglass, E, J. Adm, Rpt. 34, 38, and U2. 



Downing, S, W. Doc. 672. 



Drake, F. J. Doc. 

 Dragonflies and damselflies in relation 



to pond fish culture Doc. 



Dredging apparatus, description of Doc. 

 expedition off coast of New England 

 Records (See Albatross) 



Drill, oyster E.G. 



Drill studies, oysters Bull. 



Driscoll, Edward Doc. 



Drying fishery products Doc, 



141 



