752 



INDEX. 



The Numbers refer to the Paragraphs. 



White matter of nervous system, 242, 243 ' 



Williams, Dr., on contractility of bronchi, 759; 

 on Necrcemia, 708; on Inflammation, 158; 

 on causes of Venous Congestion, 745 



Willis, Mr., his researches on the Voice, 604 

 608 



Wilson, Mr. Erasmus, on cutaneous follicles, 

 868 



Wings of Insects, interlacement of nerves sup- 

 plying, 298; rapidity of motion of, 600 



Wollaston, Dr., his observations upon sound, 

 569 a ; upon hemiopia, 545 note 



Y. 



YAWNING, act of, 390 

 Yellow fibrous tissue, 138142 

 Yolk, 905, 935, 939 

 Yolk-bag, 905, 935, 939 



Young animals, lowcalorifying power of, 893, 

 932 a ; influence of cold upon, 893 c 



Z. 



ZONA pellucida, 905,917 



Zwicky, Dr., on organization of thrombus, 700 



THE END. 



