Elementary Biology, Plant, Animal, HumanMacmillan, 1912 - 593 páginas |
Dentro del libro
Resultados 1-5 de 89
Página 6
... the surface of water in a tray . Support the test tube in a slanting position on an apparatus stand , and heat the mixture gently with a gas or an alcohol flame , until the oxygen begins to be given off . Fill three 6 PLANT BIOLOGY.
... the surface of water in a tray . Support the test tube in a slanting position on an apparatus stand , and heat the mixture gently with a gas or an alcohol flame , until the oxygen begins to be given off . Fill three 6 PLANT BIOLOGY.
Página 9
... . Re- move the bottle , holding it upside down , and place it on the desk in this position . Allow the bottle to stand till fumes disappear . Caution : If in 3 below an explosion occurs , COMPOSITION OF LIFELESS AND LIVING THINGS 9.
... . Re- move the bottle , holding it upside down , and place it on the desk in this position . Allow the bottle to stand till fumes disappear . Caution : If in 3 below an explosion occurs , COMPOSITION OF LIFELESS AND LIVING THINGS 9.
Página 33
... position , so that the membrane does not touch the bottom of the bottle ( Fig . 8 ) . Thistle tube No. 2. - Set up a control experiment exactly like No. 1 , except that water should be put into the thistle tube as well as in the bottle ...
... position , so that the membrane does not touch the bottom of the bottle ( Fig . 8 ) . Thistle tube No. 2. - Set up a control experiment exactly like No. 1 , except that water should be put into the thistle tube as well as in the bottle ...
Página 40
... position , and cover with the second glass , fastening the two together with threads or strings . Stand one end of the preparation thus made in a jar with enough water to reach the lower edge of the blotting paper . Examine first with ...
... position , and cover with the second glass , fastening the two together with threads or strings . Stand one end of the preparation thus made in a jar with enough water to reach the lower edge of the blotting paper . Examine first with ...
Página 46
... position and color . b . Pick into threads the fibrous bark ; in what direc- tion of the stem do the fibers run ? By break- ing strips of each layer determine which of the three barks is toughest . 2. Feel of the wood from which the ...
... position and color . b . Pick into threads the fibrous bark ; in what direc- tion of the stem do the fibers run ? By break- ing strips of each layer determine which of the three barks is toughest . 2. Feel of the wood from which the ...
Otras ediciones - Ver todas
Elementary Biology: Plant, Animal, Human James Edward Peabody,Arthur Ellsworth Hunt Vista completa - 1912 |
Términos y frases comunes
alcohol animals anther arteries bacteria bark bean bees biology birds blood body bones bottle butterfly called carbon dioxid cavity cells chemical chemical elements chlorophyll color composed compound corn grain cotyledons covered crops cross-pollination Describe develop digestion egg-cell eggs embryo energy epidermis experiment Fehling's solution fertilized fish floral envelopes flowers food substances frog fruit functions germination gill glass grape sugar green growth hydrogen inches insects intestine kinds known Label Laboratory Study larvæ layer leaf leaves legs lime water liquid living lungs malaria material membrane microscope mineral matters mosquito moths mouth nucleus nutrients Optional organs outer ovary ovule oxidation oxygen pansy petal piece pistil plants pollen grains preparation produced protein protoplasm region root-hairs roots seedling seeds soil soil-water spores stamens starch stem stigma stoma stomach structure surface test tube thistle tube tiny tion trees tumbler veins wall wings
Pasajes populares
Página 169 - 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 167 - 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 36 - 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 167 - 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...
Página 168 - 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 103 - 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 169 - 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 167 - 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 fibres the molecules are counting it, registering and storing it up to be used against him when the next temptation comes.
Página 59 - In my opinion this exhibition of moral courage has never been surpassed in the annals of the Army of the United States.
Página 80 - 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.