viii LIST OF PLATES. 



The irides are the colored circles that surround the pupil. The 

 color of these decides the so-called " color of the eye." 



PLATE IV. ILLUSTRATES PREPARING SKINS Firjs. 1 and 2. 

 Corrugated hoard, used in drying skins ; d, skin on the hoard, in the 

 proper position. Fir/. 3. A "skin" prepared for scientific use; ^, la- 

 bel on which is marked the nurnher and sex. 



PLATE V. DISSECTED SONG SPARROW (Melospiza mefodia, Baird), 

 illustrating the sexes in the breeding season, as follows : Fig. 1. An 

 adult female ( 9 ) ; 1,1, peculiar yellow glands ; 2, ovary ; 3, oviduct ; 

 4, lungs. Fit/. 2. An adult male ( ) ; 1, lungs; 2, peculiar yellow 

 glands ; 3, 3, testicles. 



PLATE VI. DISSECTED SONG SPARROW, illustrating the sexes 

 of the young-of-the-year, in autumn, as follows: Fig. 1. A young 

 inale(^); 1, lungs; 2,2, yellow glands ; 3, 3, testicles. Fig 2. A 

 young female ( 9 ) > 1> 1 yellow glands ; 2, ovary; 3, lungs; 4, ovi- 

 duct. 



PLATE VII. OUTLINE OF GROUSE, showini: the po-ition of the 

 different parts, as follows : a, the hack ; b, rump ; c, tipper tail- 

 coverts; d, under tail-coverts ; e, vent; f, tibia; g, tarsi; h, breast; 

 i, side; j, neck ; k, hind neck; I, abdomen ; m, feet ; n, throat. 



PLATE VIII. ILLUSTRATES MOUNTING BIRDS. Figs. 1, 2. Arti- 

 ficial body ; a, bone of leg; h, wire bent ; c, wire clenched ; f, h, t-i'l 

 win*. Fig. 3. Mounted bird ; a, perpendicular line, showing the 

 position of the head compared with the feet and h-tse of the stand ; 

 b, b, wires for retaining the upper part of the wing in position ; c, c. 

 wires for retaining the lower part of the wing in position ; e, e, wires 

 for the tail ; d, showing the tail-feathers plaited ; f, stand. Fig. 4 

 Stand for mounting birds with the wings extended ; h, b, parallel 

 wires ; c, wires bent ; a, block of wood for the bottom of ibe stand, 

 Fig. 5. Head of Cedar-Bird, to illustrate th<> elevaiincr of the crest i 

 g, cotton on the pin ; b, feathers of the crest in position on tlie cotton. 



PLATE IX. ILLUSTRATES MOUNTING MAMMALS Fi<). 1. A, 

 plank for supporting iron rods; 8, iron rod for supporting head ; 14, 

 cap, nut, and screw for fastening the end of tbe rod in the skull; 

 7, 7, 7, 7, iron rods to support the body ; 5, G", 5, 6, caps, <'te. for fastening 

 the upper ends of the rods to the plank ; 17, 17, 1 ". 17. cans, et<-. for 

 fastening the lower part of the rods to the stand (ID) ; 15, \\i e for 

 supporting the tail; 16, 16,16, 16, 16, 16, 16, 16, aiti.icial seed.. us of 



