X CONTENTS. 



size of ponds. — Transfer of fish from one pond to another. — 

 Estimate of number of trout for a given supply of water. — Jere- 

 miah Comfort's ponds. — Stocking ponds. — Procuring and trans- 

 porting brood trout . . . P. 26 



CHAPTER III— Tkout Beeeding. 

 Incubation and Treatment of Fry. 

 Hatching apparatus. — French and American plans. — Supply of 

 water for a given number of eggs. Hatching-house. — Illustration 

 with explanations. — Filterer. — Troughs. — Nursery. — Manage- 

 ment of filterer. — Washing gravel for troughs. — Implements. 

 leaking the spawn. — Action of the female when about to spawn. 

 — Method of catching the fish on the spawning-beds. — Indications 

 of the maturity of the eggs. — Manipulation. — Placing the ova in 

 the troughs. — Packing and transportation of eggs. — Manner of 

 taking a large number of eggs for transportation from a trough. 

 — How to examine them. — Illustration with explanations of the 

 appearance of ova at different stages during incubation. — Table 

 showing progress of incubation with water at different degrees 

 of temperature. — Hatching out and progress in growth and ac- 

 tivity of fry. Treatment of fry. — Their food, and manner of 

 feeding them. — Their disposition to escape. — Transferring them 

 to the nurseries. — Their admission into the first pond. — Trans- 

 portation of fry ..... 42 



CHAPTER IV.— Trotjt Bkeeding. 

 General Remarks, Food for Adults, Trofits and Statistics. 

 Food of adult Trout. — Curd, liver, maggots. — Maggot factory. — 

 Allowance of food for a given number. — Natural food. — Stall 

 feeding and its advantages. — Trout culture a branch of farming. 

 —Facilities possessed by farmers.— Will fish culture pay ? — In- 

 stances of its being profitable.— Estimate of cost of feeding on 

 curd. — Proposed trout breeding at Ingham Spring. — Growth of 

 trout.— Description of Huningue, and M. de Galbert's estab- 

 lishment, in France.— Heidelberg.— Fish cultural enterprise 

 in Switzerland. — Trout culture in the United States.— Notice 

 of Mr. Ainsworth's establishment. — Description of Seth 

 Green's ■•••■, TS 



