First Book in Physiology: For the Use of Schools and Families |
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Page 17
... lower jaw , as it is moved up and down by the muscles , in eating . In Fig . 4 , e is like the lower jaw when it is down ; and in Fig . 5 it is like it when it is up , so that its teeth press against those of the fixed upper jaw ...
... lower jaw , as it is moved up and down by the muscles , in eating . In Fig . 4 , e is like the lower jaw when it is down ; and in Fig . 5 it is like it when it is up , so that its teeth press against those of the fixed upper jaw ...
Page 20
... lower limbs . 19. Over all the parts of the body is the skin cover- ing them up from our view . It also defends them from injury . While for this purpose it is very firm , it is at the same time quite yielding , so that it may not ...
... lower limbs . 19. Over all the parts of the body is the skin cover- ing them up from our view . It also defends them from injury . While for this purpose it is very firm , it is at the same time quite yielding , so that it may not ...
Page 23
... lower jaw . At cc are two smaller grinders . At b is what is com- monly called the eye - tooth . It is so shaped that it neither cuts nor grinds , but tears . The tooth in the What is said of the teeth ? What is the enamel , and how is ...
... lower jaw . At cc are two smaller grinders . At b is what is com- monly called the eye - tooth . It is so shaped that it neither cuts nor grinds , but tears . The tooth in the What is said of the teeth ? What is the enamel , and how is ...
Page 24
For the Use of Schools and Families Worthington Hooker. lower jaw that is like it is called the stomach - tooth . You see then that man has three kinds of teeth for eating his different kinds of food , viz . , cutting , tear- ing and ...
For the Use of Schools and Families Worthington Hooker. lower jaw that is like it is called the stomach - tooth . You see then that man has three kinds of teeth for eating his different kinds of food , viz . , cutting , tear- ing and ...
Page 25
... lower jaw is moved against the upper one by means of muscles . They are the workmen of the mill , as we may say . These muscles work differently Describe the teeth of herbivorous animals . What peculiar arrange ment of the enamel do ...
... lower jaw is moved against the upper one by means of muscles . They are the workmen of the mill , as we may say . These muscles work differently Describe the teeth of herbivorous animals . What peculiar arrange ment of the enamel do ...
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acid gas air-cells animals aorta apparatus arteries auricle bellows body brain breast-bone breathing building called capillaries carbonic acid carbonic acid gas cavity chain of bones changed chapter chest chinery chyle chyme circulation cles comes concert of action contracts cords daguerreotyping dark blood drum duct elbow-joint fastened feel fibres fingers fluid foot formative vessels front gall-bladder glands goes grinding hand head hearing heart hinge-joint images instrument intestines joint kinds larynx ligaments liver look lower jaw lungs membrane messages mind motion mouth muscles act muscles that move nerves nervous organs oxygen parietal bones particles pass pull red blood repairing represented in Fig respiration retina right auricle sent serous membrane shape shoulder-joint side skin socket sound spinal column stomach structures substance tear-gland tears teeth tendons thing tion tube ulna valves variety veins ventricle vertebræ vibration winding passages windpipe
Popular passages
Page 112 - BO many different bones, instead of being one solid, tight box. If a blow be received on the head, these bones give a little upon each other, as it is expressed, and so they are not often broken. They give more in the child than in the adult, because, besides being less brittle, they are less tightly put together. It is well that it is so ; for if it were not, the skull would often be fractured, in the frequent falls which the child has. 9. The bones on the top of the head are fastened together by...
Page 2 - Also several other Text Books by good Authors, for which, see our Catalogue, which is furnished gratis. We furnish to Teachers for Examination, postpaid by mail, a copy of any of the above books not having a * annexed, at half price. Those marked with a * we send on receipt of the prices annexed.
Page 169 - It is often produced by the vibration of the air. This is the case in whistling. In the flute it is the vibration of the air in the instrument that produces the sound. And so of other similar instruments. 3. When the vibrations are equal, the sound is a musical one. But when they are irregular, the sound is a noise, that is, a confused sound. 4. Sound passes through the air by vibrations. It may be said to pass by waves in all directions, just as waves go in all directions on the surface of water...
Page 2 - BULLIONS' SERIES OF GRAMMARS, ETC. INTRODUCTION TO ANALTT. AND PEAC. GRAMMAR. 40cts. ANALYTICAL AND PRACTICAL ENGLISH GRAMMAR. 75 cents. EXERCISES IN ANALYSIS AND PARSING. 1R cents. LATIN LESSONS, by Spencer, 75 cents, introductory to Bullions
Page 54 - ... supply of impure air afforded by the Yoga exercises, we should aim at a large supply of pure air. How is this to be secured ? The air we breathe goes down into the lungs, which are full of small air cells, somewhat like a sponge. As a sponge is much larger when its cells are filled with water than when dry, so the lungs swell out when their cells are filled with air. How many little air cells are there in the lungs ? About sixty lakhs ! The air after staying a little time in the air cells, goes...