COMMON TROUT. 91 



with the sperma of the male, for the sperma, or white roe, lies 

 like a solid substance divided into two parts in its body close 

 to the back, and grows gradually liquid, and dissolves itself 

 into a creamy fluid, beginning at the lowest part, and dis- 

 charges about the sixth part of each division every day, so 

 that within eight days all the sperma becomes liquid and 

 runs off. 



" SECTION IV. 



"1. To breed young Trouts, according to this invention, 

 you must have some Trouts taken out of the rivulet in 

 December and January when they gather together to spawn ; 

 as in some rivulets their spawn becomes later ripe, you may 

 in the latter end of January let part of the water drain off, 

 by stemming the water above, that you may take as many 

 out as you want ; if after stroking their bellies with the 

 fingers, some spawn or sperma goes off, it is a sign that both 

 are ripe, and those must be put into a large pail or tub 

 for use. 



" 2. Then take a wooden, earthen, or copper bowl, put 

 into it a pint, quart, or more of clear water ; take out of your 

 pail one fish after another, stroke them with the hand or 

 fingers downwards till the spawn discharges into the bowl : 

 you need not fear that it will hurt them, for they can without 

 danger bear great pressing ; then rub the belly of the male 

 Trout in the same manner till some of its milk discharges 

 into the water, a little is sufficient, then stir the whole 

 with your hand so as to mix it well, and all the eggs and 

 spawn will be fructuated ; then mix more clear water with 

 them to disperse them more asunder: after the eggs are 

 impregnated with the sperma they are apt to clog together, 

 which hurts them in the end ; it is therefore necessary to thin 

 them with more water, and to sprinkle them into the breed- 

 ing trough. 



