60 BULLETIN OF THE UNITED STATES FISH COMMISSION. 



788. Potter, William H. Statement concerning the menhaden fishery. 

 [In Repobt of the Commissioner for 1877, Part V, 1879, pp. 428-429.] 



789. Potts, Edward. Fresh-water sponges. What, where, when, and 



who wants them. 



[To be in Bulletin of the U. S. Fish Commission ; also in separate circular 

 printed by the author.] 



790. Powel, Samuel. Special argument in regard to regulating the sea 



fisheries by law. 

 [In Report of tne Commissioner for 1871-72, Part I, 1873, pp. 73-75.] 



791. Pratt, K. B. Report of salmon-hatching operations on Eogue River, 



Oregon. 

 [In Report of the Commissioner for 1878, Part VI, 1880, pp. 773-774.) 



792. Prentiss, Henry M. Return of salmon planted in Penobscot River. 



[In Bulletin of the U. S. Fish Commission, Vol. I, 1881, p. 273.] 



793. Rasch, H. H. Is sawdust as serious an obstacle to the ascent of 



salmon in our rivers as is generally maintained? 

 [In Report of the Commissioner for 1878, Part VI, 1880, pp. 517-;")18.] 



794. . On the reason for an extraordinarily rich production 



of oysters in a natural basin. 

 [In Report of the Commissioner for 1880, Part VIII, 1883, pp. 1037-1043.] 



795. Raveret Wattel, M. C. Shipment of salmon ova to France in 1878. 



[In Report of the Commissioner for 1878, Part VI, 1880, p. 913.] 



796. . Report on the condition of pisciculture in foreign 



countries, from documents'collected at the International Fish- 

 ery Exposition at Berlin, 1880. 

 [In Report of the Commissioner for 1880, Part VIII, 1883, pp. 477-489.] 



797. Rathbun, Richard. The littoral marine fauna of Provincetowu, 



Cape Cod, Massachusetts. 

 [In Proceedings of the U. S. Nat. Mns., Vol. Ill, 1880, pp. 116-133.] 



798. . List of marine invertebrates, mainly from the New 



England coast, distributed by the United States National Mu- 

 seum (Series II). 



[In Proceedings of the U. S. Nat, Mns., Vol. IV, 1881, pp. 293-303. ] 



799. . List of marine invertebrates from the New England 



coast, distributed by the United States National Museum 

 (Series III). 



[In Proceedings of the U. S. Nat. Mus., Vol. IV, 1881, pp. 304-307; also by Smith- 

 sonian Institution as No. 471.] 



800. . Dredging stations of the United States Fish Commis- 

 sion steamer Fish Hawk, Lieut. Z. L. Tanner commanding, 

 for 1880, 1881, and 1882, with temperature and other observa- 

 tions. 



[In Bulletin of the U. S. Fish Commission, Vol. II, 1882, pp. 119-131.] 



