LIST OF ILLUSTRATIONS. 787 



Plate XIII. Fi(^. 2. Harris's Point pomirt. Eastport., Me. Drawn by G. B. Goode. 



Fig. 3. Herring-weir, near Eastport, Me. Drawn by G. B. Goode. 

 Plate XIV. Holton's fisli-spawn hatchers, (p. 54Gaud p. 5S0 ;) patented March 18, 1673. 

 No. 13G834. 

 Fig. 1. Vertical central section of one case of trays. A, outer wooden case ; 

 B, open space at concave ('/) bottom ; C, cliannel around the top of 

 case A; P, supply-pipe ; a, pins securing trays in position ; c, wire- 

 cloth-bottomed ti'ays; c', upper tray; d, iulet-opening of supply- 

 pipe; /, discharge-spout; ft, dedector for distributing the flow of 

 water ; i, ledge upon which the trays rest ; ?^, standards for sup- 

 porting deflector ; j?, discharge-pipe for sediment and impurities ; 

 straps for lifting the trays from the case. 

 Fig. 2. Same; top or plan view; letters as in Fig. 1. 



Fig. 3, Same; trausverse sectional view of cylindrical bottom, B; letters as in 

 Fig. 1. 

 Plate XV. Clark's fish-hatching apparatus, (p. 546 and p. 5S2.) 



Fig. 1. Plan-view of a portion of hatching-house. A, walls of hatching-house ; 

 B, an elevated water-tank ; C, compartments in hatching-troughs; D, 

 hatching-boxes, containing trays ; E, trays or sieves to contain eggs ; 

 F, a perforated sheet-metal cover to hatching-boxes ; G, cross-bar 

 securing boxes in place ; H, shallow trough to contain trays of eggs 

 when removing foul matter ; a, a', faucets; h, water-channels or 

 gutters ; ft, screen at outlet of water-channels. 

 Fig. 2. Vertical section on the line x x, in Fig. 1 ; c, feet to hatching-boxes ; cl, 

 risers, elevating trays from bottom of hatching-box ; e, small slots 

 securing cross-bar, G ; other letters same as in Fig. 1. 

 Fig. 3. Sectional view of cross-bar; /, feet of cross-bar ; other letters the same 



as in Fig. 1. 

 Fig. 4. Sectional perspective of hatching-box; letters same as in Fig. 1. 

 Fig. 5. Perspective of water-channel ; letters same as in Fig. 1. 

 Fig. 6. Perspective view of inverted hatching-box ; letters same as in Fig. 2. 

 Plate XVI. Hatching-apparatus. 



Fig. 1. Sectional view of Williamson's improved double-rif&e hatching-box, 



(pp. 547 and 585.) 

 Fig. 2. Perspective view of nest of trays in Williamson's improved double-riflle 



hatching-box. 

 Fig. 3. Perspective view of Clark's hatching-appar.atus in operation ; A, water- 

 tank; B, T)erforated sheet-metal covering boxes; C, cross-bar secur- 

 ing boxes in place; D, troughs ; E, hatching-boxes containing trays; 

 F, trays ; G, H, K, nursery-comxiartments for young fish ; L, trays 

 in shallow trough while removing dead eggs ; M, shallow trough to 

 contain trays when removing dead eggs ; N, discharge-tube ; P, 

 waste-spout from nursery-trough. 



Plate XVII. Shad-hatching boxes. 



Fig. 1. Seth Green's hatching-box, (pp. 42G, 544, and 578.) 



Fig. 2. Vertical section of the same. 



Fig. 3. Vertical section of hatching-box of H. M. Bannister. 



Fig. 4. Stilwell and Atkins's shad-hatching box, (p. 579;) figures indicate 



dimensions in inches. 

 Fig. 5. Vertical section of same. * 



Plate XVIII. Illustration to paper by R. Hessel on mode of hatching adhesive eggs, 



(p. 567.) 

 Fig. 1. Perspective view of frame of box containing frames of gauge-screens ; 



bottom, sides, and lid of box to be covered with canvas; interior 



frames with bottom of wire-gauge. 



