LIST OF FIG@RES IN TEXT. 
1.—Glass balls, an illustration of Sir I. Newton’s eee 
ment 
2.—Diagram Hhastratinig gliding 
3.—Parallelogram of forces .. ‘ 
4,—Diagram and drawing of boat bdiciite 
5.—Illustrating kite-flying : ais 
6.—Showing the proportion of resistance is support 
7.—Further illustrating the spies of resistance and 
support .. = 
8.—Planes set at different deck fo ‘6c pan Nae 
9.—Showing the advantage of a curved paint 
10.—T wo cubes ‘ a i. Ne 
11.—Showing the Riddviitiage ae an excessive curve .. 
12.—Showing the shifting of the centre of pressure 
13.—Swift gliding with wings fully extended 
14.—House-Martin gliding with wings partly flexed 
15.—Showing the velocity with which the grote of the 
wing moves 
16.—Showing how the Abwnetniee tonic as veel” as lifts 
17.—(After Marey) Gulls flying : 
18.—Breastbones of Guillemot and Falcon .. 
19.—Breastbone and connected bones of Adjutant 
20.—Clavicles of Tern and Eagle 
21.—Humerus of Eagle 
22.—Humerus of (a) Skua; i Hornbill ; xo Soa-Bagle 
Drawn to scale.. 
23.—Skeleton of wing of Mdiiteies 
24.—(After Alix) showing elastic germans | anterior “ss 
membrane, etc .. a 
25.—Illustrating advance with stitial ya a right 
angles to the wind 
26.—Illustrating advance in the teeth of the wind with 
wings held rigid 
27.—Gull gliding sideways with wings bald rigid ae 
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