American Fisheries Society. 201 
made myself to which I might refer. I am rather a crank on fol- 
lowing nature. I go back to it every day in my life in medicine. 
With every new fish idea that comes I simply try to imitate na- 
ture. 
When you get to a bit of clay soil it is not wise to always dig 
out all the clay. Clay is an important factor and it is well to leave 
a certain amount of it. At times you want your streams to wash 
out everything down to your gravel beds. If the nature of the 
soil is muddy do not clear out all that muck; leave it and let the 
water overflow it. I have taken out the boulders, and where I 
have excavated down deeply I have built rockeries out of them, so 
that when you flood back you cover all your rockeries. That 
gives a magnificent place for the fish to hide that they may get 
out of the sun’s rays; and it is a good place also for them to feed. 
They like it. Of course gentlemen who are raising fish as you 
are, where you have to send them off, might say that these rock- 
eries might interfere when you drew your water down, so that 
you could not get the fish out readily. That does not bother me 
seventy-five foot 

much because I have such a tremendous fall 
drop—250 gallons a minute pouring out for aeration. I have 
built my ponds (those that I began on) myself; it is hard work 
to take up the old stuff and do much with it; and I have exca- 
vated it so that I can drain it perfectly. 
I made a mistake at first in not putting in raceways; that was 
serious because in the spring the water rose so high it went over 
the top of the dam. Now with the raceways in that fault is 
eradicated. 
You will see on one of these photographs what fish are sup- 
posed to be in the waters. I suppose where this is marked “gray- 
ling” that the graylings are there; it is a supposition on my part 
because no one has ever seen them since the third day they went 
into the water; they have not appeared against the screens; there 
is nothing in there to eat them; they are not on the surface. 
There is a culvert and a bridge there, and Dr. Henshall thinks 
perhaps they are hidden away somewheres in that vicinity. If 
my attempt to raise the grayling this year does not prove suc- 
cessful I will adopt a somewhat different plan next year. I shall 
let the eggs hatch in a natural stream, and | believe that nature 
will have endowed them with common sense enough to take care 
