XX LIST OF ILLUSTRATIONS 
FIGURE 
PAGE 
364. 
Tongue of Man. 
. 405 
365. 
Diagram of Taste Cells. 
. 405 
366. 
X-ray of Three Teeth. 
. 406 
367. 
Vertical Section of Tooth. 
. 407 
368. 
Milk Teeth. 
. 407 
369. 
Permanent Teeth ...... 
. 408 
370. 
Pear-shaped Human Stomach .... 
. 408 
371. 
X-ray Photograph of Human Stomach 
. .409 
372. 
X-ray Photograph of Large Intestine of Man, Showing Appendix 409 
373. 
Human Gastric Gland ..... 
. 412 
374. 
Diagram of Villus from Inner Wall of Intestine . 
. 414 
375. 
Census Map of Dairy Cows . . . . 
. 417 
376. 
A Typical Western Wheat Field 
# . . 420 
377. 
A Grain Elevator ...... 
. 421 
378. 
Flouring-mill Where Wheat Is Turned into Flour 
. 422 
379. 
War Garden ....... 
. 425 
380. 
Skeleton. 
. 432 
381. 
Cartilage ........ 
. 433 
382. 
Diagram to Show the Structure of Bone 
. 433 
383. 
X-ray of Hand of Child. 
. 434 
384. 
X-ray of Hand of Adult. 
. 434 
385. 
X-ray of Dislocated Finger .... 
. ' 435 
386. 
X-ray of Broken Femur ..... 
. 435 
387. 
X-ray of the Same Bone after Healing 
. 435 
388. 
Muscles of Upper Leg ..... 
. 437 
389. 
Voluntary Muscle Cells. 
. 438 
390. 
Involuntary Muscle Cells ..... 
. 438 
391. 
Heart Muscle Cells. 
. 439 
392. 
The Lungs and Heart. 
. 443 
393. 
Ciliated Epithelium ...... 
. 443 
394. 
Voice Box or Larynx ...... 
. 445 
395. 
Diagram to Show the Relation of the Diaphragm 
to the Ribs 446 
396. 
Hot-air Heating ....... 
. 447 
397. 
Steam Heating ....... 
. 448 
398. 
Photomicrograph of Blood of Frog 
. 449 
399. 
Diagram to Show How Energy Reaches the Cells 
. 450 
400. 
Organs of Circulation . ... 
. 451 
401. 
Heart. 
. 452 
402. 
Diagram of a Vein, Showing the Valves . . . 
. 453 
403. 
Diagram of Capillaries. 
. 453 
404. 
Main Arteries of Frog ..... 
. 454 
