90 REPORT OF COMMISSIONERS OF INLAND FISHERIES. 



DETAILS OF STRUCTURE, 



Houseboat. — -A brief description of the houseboat with its materials 

 and dimensions is as follows: Two pontoons 52 feet long, 4 feet wide, 

 and 4 feet deep, of 3-inch hard pine caulked, completely decked with 

 2-inch hard pine caulked; each pontoon with 3 bulkheads and 4 water- 

 tight compartments accessible by hatches, painted all over, copper 

 paint below water line; pontoons placed 8 feet apart securely fastened 

 by crossbeams and heavy knees at each end; houses 10 by 10 feet 

 near each end of the boat, with floors of 2-inch hard pine, roofs, sides, 

 doors, shelves, closets, of North Carolina pine, painted outside, 

 natural-wood finish inside; roof of house 7 feet from floor and having 

 a slight crown, covered with canvas and painted. An annex to the 

 house (fig. 1) on one end, made of lighter material and of the same 

 dimensions, has been added to give additional space for the engines 

 and tools. 



Floats. — The four side floats, so-called, are merely skeleton rafts, 

 buoyed with barrels, whose construction may be seen in the diagram 

 and in figures 2 and 3. Pieces of 6 by 6 inch timbers, spliced together 

 if necessary, are bolted together to form a rectangle 19 by 75 J feet. 

 Parallel with the long sides and 2| feet inside are similar timbers, 

 running the whole length of the raft. This makes an alleyway on 

 each side for the supporting of barrels, and the spaces between the 

 barrels are available for small rearing boxes used in preliminary ex- 

 periments. Across the inner long timbers are placed 6 by 6 inch 

 beams at intervals of 12 feet, dividing the whole raft into six compart- 

 ments 12 by 12 feet square for the reception of the rearing cars. 

 Except for occasional spaces this completes the lower part of the raft. 



Upon these beams short vertical pieces are set at the corners of the 

 car pools to form a rest for the seven upper crossbeams which run 

 parallel with the lower ones (diagram and figs. 2 and 3). These upper 

 crossbeams of 4 by 6 inch stock support a longitudinal shaft beam, also 

 4 by 6 inches, which runs the whole length of the float through the 

 middle and upon which are fastened the shaft hangers. 



