690 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



1925. Yarrow, H. C. On the speckled trout of Utah Lake (Salmo virginalis 



Girard). Report for 1872-73, n, pp. 363-368. 1874. (Out of print.) 



1926. Yarrow, H. C. Report of a recormoissance of the shad rivers south of the 



Potomac. Report for 1872-73, n, pp. 396-402. 1874. (Out of print. ) 



1927. Yarrow, H. C. Notes on the natural history of the shad as observed at 



Beaufort Harbor, North Carolina, and vicinity. Report for 1872-73, n, pp. 

 452-456. 1874. (Out of print.) 



1928. Yhlen, Gerhard von. Report on the sea fisheries of the Lan of Goteborg 



and Bohus in the year 1877. Report for 1877, v, pp. 741-750. 1879. (Out 

 of print.) 



1929. Yoakum, F. L. Carp-culture in Texas. Bulletin, n, for 1882, pp. 28-32. 



1882. (Out of print.) 



1930. Yost, John. Report upon the management of German carp by a Mississippi 



correspondent. Bulletin, n, for 1882, p. 310. 1883. (Out of print.) 



1931. Young, A. Upon the abundance of fish on the New England coast in for- 



mer times. Report for 1871-72, 1, p. 160. 1873. (Out of print.) 



1932. Zacharias, Otto. Some of the life needs of fish. Bulletin, vi, for 1886, 



pp. 445-447. 1887. (Out of print.) 



1933. Zenk, F. Prices of carp, tench, and goldorfe, Germany. Bulletin, ill, for 



1885, p. 406. 1883. (Out of print.) 



1934. Zentz, F. On the races or varieties of carp, denying the existence of blue 



carp and gold carp. Bulletin, I, for 1881, pp. 387-389. 1882. (Out of 

 print.) 



