Elementary Biology: Plant, Animal, HumanMacmillan Company, 1912 - 593 páginas |
Dentro del libro
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Página vii
... various types of bacteria ; we may learn of the activities of individual men or of groups of individuals which promote or retard the advance of human society ; or we might , if we were to carry the study still farther , even seek to ...
... various types of bacteria ; we may learn of the activities of individual men or of groups of individuals which promote or retard the advance of human society ; or we might , if we were to carry the study still farther , even seek to ...
Página ix
... various functions considered must have some relation to human life ; and that the course , to be of practical importance , must suggest to the youth better ways of carrying on his own life and of helping to improve the surroundings in ...
... various functions considered must have some relation to human life ; and that the course , to be of practical importance , must suggest to the youth better ways of carrying on his own life and of helping to improve the surroundings in ...
Página x
... various topics discussed . If both coarse and fine print on animal , or plant , or human biology are used , sufficient material for a half - year course in either elementary botany , zoölogy , or human physiology will be provided . In ...
... various topics discussed . If both coarse and fine print on animal , or plant , or human biology are used , sufficient material for a half - year course in either elementary botany , zoölogy , or human physiology will be provided . In ...
Página xii
... various ways in which plants are propagated . This treatment presents only the briefest statement of underlying principles , since any extended dis- cussion of this topic belongs to a course in agriculture . In Chapters IX ( Plants in ...
... various ways in which plants are propagated . This treatment presents only the briefest statement of underlying principles , since any extended dis- cussion of this topic belongs to a course in agriculture . In Chapters IX ( Plants in ...
Página 3
... various methods of repro- duction are much the same from the lowest plants to the highest animals . 5. Summary . - -In brief , then , we may say that all liv- ing things have the power of growth from within , of self - repair , and of ...
... various methods of repro- duction are much the same from the lowest plants to the highest animals . 5. Summary . - -In brief , then , we may say that all liv- ing things have the power of growth from within , of self - repair , and of ...
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Elementary Biology, Plant, Animal, Human James Edward Peabody,Arthur Ellsworth Hunt Vista completa - 1912 |
Términos y frases comunes
abdomen adaptations alcohol animals arteries bacteria bees biology birds blood body bones bottle breathing butterfly called capillaries carbon dioxid cavity cells chlorophyll color composed compound corn cotyledons covered crayfish crops Describe develop digestion dishes egg-cell eggs embryo energy epidermis experiment Fehling's solution fertilized filaments fins fish floral envelopes flowers food substances frog fruit gill glass grain grape sugar growth head inches insects intestine jaws kinds known Label Laboratory Study larvæ layer leaf leaves legs lime water liquid living lungs malaria material membrane microscope mosquito moth mouth muscles nucleus nutrients Optional organs outer ovary ovule oxidation oxygen pairs paramecium piece pistil plants pollen produced protein protoplasm region roots salmon seedling seeds side soil sperm-cells spores stamens starch stem stoma stomach structure surface teeth test tube thistle tube tiny tion tissue trees veins wall wings
Pasajes populares
Página 163 - I suppose, have thus suffered; and if I had to live my life again, I would have made a rule to read some poetry and listen to some music at least once every week; for perhaps the parts of my brain now atrophied would thus have been kept active through use.
Página 161 - Could the young but realize how soon they will become mere walking bundles of habits, they would give more heed to their conduct while in the plastic state.
Página 161 - Well! he may not count it, and a kind Heaven may not count it; but it is being counted none the less. Down among his nerve cells and fibers the molecules are counting it, registering and storing it up to be used against him when the next temptation comes. Nothing we ever do is, in strict scientific literalness, wiped out. Of course, this has its good side as well as its bad one. As we become permanent drunkards by so many separate drinks, so we become saints in the moral, and authorities and experts...
Página 24 - For they covered the face of the whole earth, so that the land was darkened; and they did eat every herb of the land, and all the fruit of the trees which the hail had left; and there remained not any green thing in the trees, or in the herbs of the field, through all the land of Egypt.
Página 161 - I won't count this time." Well ! he may not count it, and a kind Heaven may not count it ; but it is being counted none the less. Down among his nerve cells and fibers the molecules are counting it, registering and storing it up to be used against him when the next temptation comes.
Página 91 - AMERICAN ORNITHOLOGISTS' UNION. An Act for the Protection of Birds and their Nests and Eggs. Section i. No person shall, within the State of- , kill or catch or have in his or her possession, living or dead, any wild bird other than a...
Página 163 - My mind seems to have become a kind of machine for grinding general laws out of large collections of facts ; but why this should have caused the atrophy of that part of the brain alone on which the higher tastes depend, I cannot conceive.
Página 162 - Let no youth have any anxiety about the upshot of his education, whatever the line of it may be. If he keep faithfully busy each hour of the working day, he may safely leave the final result to itself. He can with perfect certainty count on waking up some fine morning to find himself one of the competent ones of his generation, in whatever pursuit he may have singled out..
Página 76 - The use of intoxicants by employes while on duty is prohibited. Their habitual use, or the frequenting of places where they are sold, is sufficient cause for dismissal.
Página 161 - There is a story, which is credible enough, though it may not be true, of a practical joker, who, seeing a discharged veteran carrying home his dinner, suddenly called out, 'Attention!' whereupon the man instantly brought his hands down, and lost his mutton and potatoes in the gutter. The drill had been thorough, and its effects had become embodied in the man's nervous structure...