REPORT OF COMMISSIONER OF FISH AND FISHERIES. 143 



Lake and the upper part of the Sevier River. In all streams like the 

 latter occurring- in this basin Dr. Jordan considered that catfishes might 

 be planted to good advantage. 



In connection with his description of the many mountain trout ob- 

 served, Dr. Jordan defines carefully the several varieties or subspecies 

 Avhich he now recognizes, numbering 10 in all. One of these, a new 

 and large variety from the Twin Lakes, has been named ^almo myJciss 

 macclonaldi, in honor of the U. S. Fish Commissioner. Five of the varie- 

 ties mentioned were collected in Colorado and Utah, and nine have 

 been figured in his report. 



MISSOURI AND ARKANSAS. 



The investigations in these two States, which had been planned for 

 1888, were taken up in the summer of 1889 by Prof. S. E. Meek, of Coe 

 College, Iowa, assisted by Mr. Louis Rettger and Mr. Frank M. Drew, 

 of the Indiana University. The operations of this party were chiefly 

 limited to the Ozark region of southern Missouri and northern and 

 western Arkansas, in the midst of which, at Neoslio, Mo., a hatching 

 station was in course of building by the U. S. Fish Commission. The 

 surface of the country in this region is much broken, although none of 

 the hills reach a very great height. Springs abound and the streams 

 are clear and cold even during midsummer. The bottoms of the latter 

 are rocky, gravelly, or sandy, with little mud, and aquatic vegetation is 

 not abundant. Fishes were plentiful in nearly all of the rivers in Mis- 

 souri that were visited, but they were scarce in the Mazarn, and espe- 

 cially so in the Caddo and the forks of the Saline. It was reported that 

 large numbers of fishes had been killed in the latter streams by the use 

 of dynamite, and also in the neighborhood of IS^ewburg, Neosho, and Ca- 

 bool. Mo. Were this iieruicious practice of destroying the native fishes 

 to be continued, fish-cultural operations could not have much effect in 

 replenishing the supply, but it is hoped that measures maybe taken to 

 Ijrevent it in the future. In the Missouri River basin the Meramec, 

 Gasconade, and Osage rivers were examined; in the Arkansas basin, 

 Neosho River and Spadra Creek; in the White basin, White River, 

 the tributaries about Mammoth Spring, and Little Red River; and in 

 the Washita basin, Washita, Caddo, and Saline rivers and Mazarn 

 Creek. 



Mammoth Si)ring, Arkansas, is one of the largest si)riiigs in the 

 United States, flowing about 50,000 cubic feet of water i)er minute; the 

 temperature of the water ranges from 59° to 02° F., throughout the 

 year. A fish farm lias recently been established at this i^lace, and in 

 1889 they began the rearing of trout which are said to grow rapidly, 

 the conditions being exceedingly favorable for that purpose. The U. S. 

 Fish Commission hatchery at Neosho is situated on a branch of the 

 Neosho River and is fed from a fine spring. The station, however, had 



