LIST OF ILLUSTRATIONS. 787 



Pi.ATE XIIL F'lcr. 2. Harris's Point poniul. Eiistport, Me.' Drawn by G. B. Goode. 



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

 Plate XIV. Holton's fish-spa wu hatchers, (p. 546 and p. .5-50 ;) patented March 18, 1873. 

 No. 136834. 

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

 B, open space at concave (?) bottom ; C, channel around the top of 

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

 cloth-bottomed trays; c', upper tray; d, inlet-opening of supply- 

 pipe; /, discharge-spout; h, deflector for distributing the flow of 

 water; i, ledge upon wjiich the trays rest; n, 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; transverse sectional view of cylindrical bottom, B; letters as in 

 Fig. 1. 



Plate XV. Clark's ftsh-hatching apparatus, (p. .546 and p. 582.) 



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; b, 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 ; d, 

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

 securing ci"oss-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-br»x ; 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-riffle hatching-box, 



(pp. 547 and 58.').) 

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



hatching-box. 

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

 tank; B, perforated 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-compartments 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. 

 Pj>ate XVII. Shad-hatching boxes. 



Fig. 1. Seth Green's hatching-box, (pp. 426, 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. 



