27 



HOW TO EXTRUDE THE EGGS. 



Take out the trout in the race with a net, and place them 

 in baskets, standing in the water, in some convenient place 

 to handle them. Take a pan or pail with three or four 

 inches of water in it from the spring, and place it near the 

 baskets containing the trout. The eggs must be quickly ex- 

 truded and the trout replaced in the water. This operation 

 must not consume more than one minute if possible. AH 

 things being ready a female trout is taken out of the basket 

 with one hand, with the other gently rub the abdomen from 

 the gills downward, and the spawn will flow in a continuous 

 stream into the vessel. Continue the rubbing untU tlie spawn 

 is wholly extruded, then quickly replace the trout in the race, 

 or separate basket. One side of the egg has a small, white 

 speck ; here is where the impregnation takes place. This 

 side of the egg being the lightest it always falls this side up 

 ready to receive the milt. We have now in the paU from 400 

 to 8,000 spawn, according to the age and size of the female. 

 Now take a male trout from the basket, and, in like manner, 

 or by the thumb and finger on each side of the abdomen, 

 which requires rather more pressure, exude the milt. The 

 mUt falls upon the water and settles upon the eggs. I usual- 

 ly take from two to four males to impregnate from 2,000 to 

 8,000 spawn. In like manner I serve all the trout in the 

 baskets. I then place the spawn and milt in shallow vessels 

 and put the dishes in the spring water, where I allow them 

 in the milt from one to twenty-four hours. Probably one 

 hour is sufficient to insiu-e impregnation. I took from 300 

 to 10,000 spawn daily from the 3d of November to the 10th 

 of January, making in all, about 130,000 spawn, attended 

 with perfect success. 



HOW TO PLACE THE EGGS IN THE HATCHING BOXES. 



Commence at the lower end of the box, and lay the eggs 

 on top of the sand as thick as 5*^ou can place them without 



