KM: Thirlij-sixlli Ann, ml Mrrll,,,, 



Mr. :i)()\vii'ii--: I would Jike lu ask .Mr. Clark wliat hivoin-. 

 of the c'<;'»i's llial How over. 



Mr. Clark: Thvy How into the iroii-li. 



Q. An. I llioii out into tlic tank? 



Mr. Clark: Into tlic tank, if you picasf. in the Detroit 

 plant tlio cg-o-s ilow into the tank and into the cm]. (Indicat- 

 ing-.) It is the double l)attcrv system, and they Ilow (o the other 

 end, and air enters the tank at the ci-oss section. 



Q. ])oesn't it ever plug any of tlicin? 



Mr. Clark: Xo reason why it slioidd. 



(}. Xo water ean gx-t down into \-our trough? 



]\[r. ("lark: I'lien youi- hatcliery is not nm I'ight. Ih- 

 should have another system for pumping his water out. \\'\u\\ 

 did yon say was the reason of the eggs running in? 



]\[r. Downing: If the water should run down tliat would 

 naturally create a suction. 



Mr. Clark: And draw tlu" eggs in a mass of fungus? 



]\lr. Downing: There wo;dd l)e no mass of fungus in youi 

 trough. 



^Ir. Clark: In the whitcfisli hattcry wr have two systems. 

 You have one here — ^Ir. Downing. I thiid< has one here. You 

 have got the illpena system. In Detroit we have the douhb 

 battery. All of you have either seen it or ha\e read the descip- 

 tion of it in the Fish Cultural Monthly. The water passes down 

 into a troug-h. That troug-h does not feed your lower jars. This 

 trough comes down to the other end. Your water is not going- 

 to run down : the eggs are not coming in to stop your laucet. he- 

 cause the eggs are down in your other li'ough. 



(). And do not pass down through the supjjly ti-ough at all':' 



Mr. Clark: Xot at all. unless they get too many. Of course 

 they should he drawn out with a si])lujn. Those troughs sluudd 

 he cleaned out in vwry hatchery once in a while, accoi-ding to 

 how much there is in. 



