CONTENTS XI 



CHAPTER XXV 



PAGE 



THE DUCTLESS GLAN T DS ........ 331 



Spleen ......... 332 



Haemolymph Glands . . . . . . . . 336 



Thymus . . . . . . . . .336 



Thyroid ......... 337 



Parathyroids ......... 339 



Supra-renal Capsules . . . . . . . . 340 



Pituitary Body ........ 343 



Pineal Gland ......... 345 



Coccygeal and Carotid Glands . . . . . .345 



CHAPTER XXVI 



RESPIRATION . . . . . . . . .346 



Respiratory Apparatus . . . . . . .346 



Respiratory Mechanism ....... 354 



Graphic Record of Respirations . . . . .356 



The Gases of the Blood . . . . . . .361 



Solution of Gases in Water . ..... 361 



Dalton-Henry Law .... ... 362 



Tension of Gases in Fluids ....... 362 



Measurement of Quantity of Gas in Fluids . . . . .363 



Relation between Quantity and Tension ..... 365 



The Mechanism of Gaseous Exchange in the Lung . . .372 



1. Oxygen ........ 372 



2. Carbonic Acid ....... 375 



Cause and Regulation of Respiration ..... 375 



1. The Respiratory Centre ...... 375 



2. The Nervous Factor in Respiration ..... 376 



3. The Chemical Factor in Respiration . . . .380 



Special Respiratory Acts . . . . . . .381 



Artificial Respiration . . . . . . . .383 



Ventilation ......... 384 



CHAPTER XXVII 



THE RELATION OF RESPIRATION TO OTHER PROCESSES IN THE BODY . . 385 



Effect of Respiration on the Circulation ..... 385 



Asphyxia ......... 389 



Relation of Respiration to Nutrition ..... 392 



Oxygen Want ........ 398 



Mountain Sickness ........ 400 



Respiration at High Pressures . . . . . .402 



Carbon Monoxide Poisoning . ...... 403 



Cheyne-Stokes Respiration . . . . . .404 



Diabetic Coma 405 



