INDEX. 



493 



Position of socket in wing of bird, 

 3'7- 



Prairie hunters, 8 1 . 



Principles, general, i. 



Prismatic muscles, 165, 166. 



Principle of least action, 238, 302. 



,, shown in 



heart, 431. 



Propositions regarding muscular ar- 

 rangement, 387. 



Pyrenean mastiff, tendons of foot of, 

 85, 88. 



Quadrumana, hand flexors in, 123. 

 Quadrilateral muscles, 194. 



muscles, examples of, 196. 



Quadratus labii inferioris, 206. 



Rankine's principle, 47. 



observation on work in carrying 



loads, 57. 

 Ratio of observed work done by 



skew muscles to maximum possible 



work, 359. 

 of section of muscle to tendon 



in mastiff, 89. 

 of section of muscle to tendon 



in man, 86. 

 section of muscle to tendon in 



kangaroo, 91. 

 Rate of nerve action, 14. 

 Rectus abdominis, tensile strain of, 



219. 



Relation of useful work to weight, 44. 

 Reptile flexors, 117. 

 Refreshment, law of, 478. 



coefficient of, 479. 



Rhomboideus muscle, anatomy of, 

 66. 



Rhomboidal muscles, 166. 

 Rhea, foot tendons of, 75, 114. 

 muscular type of, 401. 



Rhinoceros, foot tendons of, 105. 



Rhesus, action of foot in, 93. 



Rigor mortis, 6. 



Risorius muscle, 205. 



Rodents, foot tendons of, 107. 



pectoral muscles, 193. 



hand, tendons of, 132. 



Rosenthal, work done by frog 

 muscles, 73. 



Rule for ensuring instant death in 

 hanging, 9. 



Running and standing power, com- 

 parison of, in animals, 417. 



Russell, Scott, on resistance of eight- 

 oared boat, 51. 



Sambur deer, biceps of, 173. 

 Sarcolemma, 3. 

 Sartorius, fibres of, 1. 

 Schulze on tendons of foot, 82. 

 Section, cross, of muscle, 84, 



cross, of tendon, 88. 



Semitendinosus, section of, 67. 

 Semimembranosus, section of, 67, 

 Shoulder muscles, work done by, 27. 



joint, theory of, 361, 388. 



Sibson on fibres of heart, 145. 

 Skew muscles, postulate for, 358. 



transfer of force caused 



by, 361. 



muscles, action of, 232, 242. 



Sloth, three-toed, foot tendons of, 

 105. 



Socket, position of, in wing of bird, 

 317. 



Sommerring on right ventricle, 145. 

 Sorby on cleaved rocks, 4. 

 Spengler, experiments on blood pres- 

 sure, 149. 

 Sphincter muscles, 4, 196. 



muscles of the eye, 201. 



,, mouth, 204. 



