Investigational Reports (IR) 



*IR 1. The menhaden industry, by Roger W. Harrison. 1931^ 113 PP.^ 

 illus . 



*IR 2. Studies on the nutritive value of fish meals, by Esther 

 Peterson Daniel and E. V. McCollum. 1931^ 19 PP-^ illus. 



*IR 3- Vitamin D in menhaden fish oils, by John Ruel Manning, E. M. 

 Nelson, and Chester D. Tolle . 1931> 5 PP-^ illus. 



*IR k. Commercial production of menhaden fish oil for animal feeding, 

 by Roger W. Harrison and S. R. Pottinger. 1931^ H PP- 



*IR 5. Spectrographlc analysis of marine products, by John M. Newell 

 and E. V. McCollum. 1931; 9 PP- 



*IR 6. Survey of oyster bottoms in Texas, by Paul So Galtsoff . 19 31^ 

 30 PP . , illus . 



*IR 7. Market for marine animal oils in the United States, by Roger 

 W. Harrison. 1931;. 78 PP-j- illus. 



*IR 8. Studies in crab canning, by Kokichi Oshima. 19 31^ 8 pp. 



*IR 9. Reducing the shrinkage of frozen fish in cold storage, by James 

 M. Lemon. 1932, 12 pp. 



*IR 10. Winter trawl fishery off the Virginia and North Carolina coasts, 

 by John C. Pearson. 1932, 31 PP-^ illus. 



*IR 12. Chemical and physical properties of burbotllver oil and its 



vitamin content, by E. M. Nelson, Chester D. Tolle, and George S. 

 Jamieson. 1932, 6 pp., illus. 



*IR 13. The fisheries of Puerto Rico, by Norman D. Jarvis. 1932, ^1 pp., 

 illus . 



■^IR lUa Fisheries of the Virgin Islands of the United States, by R. H. 

 Fiedler and No D. Jarvis. 1932, 32 pp., illus. 



*IR 15 . New methods of opening oysters and improving their condition 



for market, by V. Koehring and H. F. Prytherch. 1932, 25 pp., illus. 



*IR 16. Developments in refrigeration of fish in the United States 

 (with bibliography), by James M. Lemon. 1932, 32 pp., illus. 



*IR 17. Studies on the nutritive value of oysters, by E. J. Coulson. 

 1933, 30 pp., illus. 



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