American Fisheries Society 141 



box was invented bv niv father in 1874. As Mr. FuUerton has 

 tohl you, this is the Williamson box, and the Clark-Williamson 

 box is really a combination of the Clark box and the Williamson. 

 jN"ow in the Clark- Williamson box (as I showed you with a model 

 at White Sulphur Springs) is an opening where the water comes 

 up through a two-inch water space and flows over on the trays. 

 Xow the Clark- Williamson box is simply widened out, and we 

 use it for trays and it has a remarkably great capacity in com- 

 parison with the space occupied. 



'Now I would suggest, if you build trough that to save ex- 

 pense and economize space, you try a Clark- Williamson box. 



John W. Titcomb, Washington, D. C. : All the parts of the 

 equipment exhibited at the White Sulphur Springs meeting are 

 on exhibition in our basement at the Bureau of Fisheries. We 

 also have some salmon eggs hatching there. Part of this equip- 

 ment is in the main exhibition room and labeled, and a part of 

 it is out in the car shed, and there you can see the Clark box and 

 the Clark-Williamson box illustrated. 



Mr. Fullerton : One word about Mr. Clark's statement as to 

 capacity: We can build these troughs two feet higher if we 

 want to and increase the tray capacity. 



Mr. AV. T. Thompson, Leadville, Colo. : How many trays 

 will yours hold ? 



Mr. Fullerton : Sixteen, one on top of another. 



Mr. Clark : We are now building dou])le deckers. I think 

 the next one I build will be a three decker. 



Air. Fullerton: There is no limit to the numl)er you can 

 build and the cement is all rialit. 



