CONTENTS. IX 



LESSON PAOM 



XLix. pfluger's law of contraction— electrotonio variation of 



THE ELKCTRO-MOTIVITY— RITTER'S TETANUS .... 247-250 

 L. VELOCITY OF NERVE-IMPULSE IN MOTOR NERVES OF FROQ AND 



MAN— KUHNB'S gracilis EXPERIMENT 250-254 



LI. CONDITIONS AFFECTING EXCITABILITY OF NERVE . . . 254-258 



UI. THE frog's HEART— BEATING OF THE HEART— EFFECT OF HEAT 



AND COLD— SECTION OF THE HEART 259-262 



LIII. GRAPHIC RECORD OF THE FROG'S HEART-BEAT— EFFECT OF 



TEMPERATURE 262-265 



LIV. SUSPENSION METHODS FOR HEART — GASKELL'S HEART-LEVER 



AND CLAMP 266-270 



LV. STANNIUS'S EXPERIMENT — INHIBITION — LATENT PERIOD OF 



HEART-MUSCLE 270-273 



LVI. CARDIAC VAGUS AND SYMPATHETIC OF THE FROQ AND THEIR 



STIMULATION 273-276 



IVn. ACTION OF DRUGS AND CONSTANT CURRENT ON HEART— DESTRUC- 

 TION OF CENTRAL NERVOUS SYSTEM 277-279 



LVni. PERFUSION OP FLUIDS THROUGH THE HEART— PISTON-RECORDER 279-28 1 

 LIX. ENDO-CARDIAL PRESSURE — APEX-PREPARATION — TONOMETER . 281-284 

 LX. HEART-VALVES— ILLUMINATED HEART— STETHOSCOPE — CARDIO- 

 GRAPH—POLYGRAPH—INHIBITION OF HEART .... 284-291 

 LXI. THE PULSE — SPHYGMOGRAPHS — SPHYQMOSCOPE — PLETHYSMO- 



GRAPH • 291-295 



LXn. RIGID AND ELASTIC TUBES — THE PULSB-WAVB — SCHEME OF THE 



CIRCULATION — RHEOMETER 295-3OO 



LXm, CAPILLARY BLOOD-PRESSURE— LYMPH HEARTS— BLOOD-PRESSURE 



AND KYMOGRAPH 3OO-306 



LXIV. PERFUSION THROUGH BLOOD-VESSELS 306-307 



LXV. MOVEMENTS OP THE CHEST WALL — ELASTICITY OF THE LUNGS- 

 HYDROSTATIC TEST 308-311 



LXVI. VITAL CAPACITY — EXPIRED AIR — PLEURAL PRESSURE — GASES 



OF BLOOD AND AIR 311-314 



LXVn. LARYNGOSCOPE-— VOWELS 315-317 



LXVin. REFLEX ACTION— ACTION OF POISONS — KNEE-JERK . . . 318-322 



LXIX. SPINAL NERVE ROOTS 322 



LXX. REACTION TIME — CEREBRAL HEMISPHERES .... 323-328 



LXXI. FORMATION OF AN IMAGE — DIFFUSION— ABERRATION— ACCOM- 

 MODATION — SCHEINER'S EXPERIMENT — NEAR AND FAR 

 POINTS— PURKINJE'S IMAGES— PHAKOSCOPB—ASTIGMATISM— 



PUPIL 329-337 



LXXn. BLIND SPOT— FOVEA CENTRALIS— DIRECT VISION— CLERK-MAX- 



WELL'S EXPERIMENT— PHOSPHENES— retinal SHADOWS . 337-343 



LXXm. PERIMETRY— IRRADIATION— IMPERFECT VISUAL JUDGMENTS . 344-35O 



