14 PREFACE. 



fish, with colored drawings prepared for it under the author's personal supervision ; to 

 Prof. H. A. Surface, of the Pennsylvania State College, for the article on the lake 

 lamprey ; to the Commissioner of Fish and Fisheries of the United States for fish 

 eggs, fry and older fish furnished to this Commission for planting in State waters, and 

 to the railroads of the State and also to lake transportation companies for the free 

 transportation of the State fish car, messengers from the hatcheries, fish cans and egg 

 crates. Not only do the railroads of the State furnish free transportation in fish dis- 

 tribution, but the employees of the transportation companies render every possible 

 assistance to hatchery messengers when they are moving fish. 



The trout in the ponds mentioned by Dr. Calkins all died, practically of the par- 

 asite disease he investigated, but the ponds were deepened, cleaned and generally 

 purified, and new stock fish introduced which are now in a healthy condition, as we 

 are informed. The fish affected did not belong to the State, but the ponds were in 

 the vicinity of some of the State breeding and stock ponds, and it was deemed best 

 to investigate the trouble as a precautionary measure. 



THE COMMISSIONERS. 



