The Scientific Monthly, Tom 5James McKeen Cattell American Association for the Advancement of Science, 1917 |
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Strona 459
... ionium in the uranium series , and mesothorium - I and radiothorium in the thorium series , could not be separated from other constituents always present in the minerals , radium - D from lead , ionium and radiothorium from thorium ...
... ionium in the uranium series , and mesothorium - I and radiothorium in the thorium series , could not be separated from other constituents always present in the minerals , radium - D from lead , ionium and radiothorium from thorium ...
Strona 462
... ionium , will be dealt with later . The most recent , which appeared last month , is by T. W. Richards and N. F. Hall , who subjected lead from Australian carnotite , containing there- fore radium - D , to over a thousand fractional ...
... ionium , will be dealt with later . The most recent , which appeared last month , is by T. W. Richards and N. F. Hall , who subjected lead from Australian carnotite , containing there- fore radium - D , to over a thousand fractional ...
Strona 509
... ionium ( Group IV . ) , radium , and so on , while , in the thorium series , thorium ( Group IV . ) produces by an a - ray change meso- thorium - I ( Group II . ) , which , in subsequent changes in which no a - rays are expelled ...
... ionium ( Group IV . ) , radium , and so on , while , in the thorium series , thorium ( Group IV . ) produces by an a - ray change meso- thorium - I ( Group II . ) , which , in subsequent changes in which no a - rays are expelled ...
Strona 512
... IONIUM A second quite independent case of a difference in atomic weight between isotopes has been established . It concerns the isotopes thorium and ionium , and it is connected in an im- portant way with the researches which , on two ...
... IONIUM A second quite independent case of a difference in atomic weight between isotopes has been established . It concerns the isotopes thorium and ionium , and it is connected in an im- portant way with the researches which , on two ...
Strona 513
... ionium must be at least 100,000 years , forty times longer than that of radium , and , therefore , that there must be at least forty times as much ionium by weight as radium in uranium minerals , or at least 13.6 grams per 1,000 kilos ...
... ionium must be at least 100,000 years , forty times longer than that of radium , and , therefore , that there must be at least forty times as much ionium by weight as radium in uranium minerals , or at least 13.6 grams per 1,000 kilos ...
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Strona 244 - The hell to be endured hereafter, of which theology tells, is no worse than the hell we make for ourselves in this world by habitually fashioning our characters in the wrong way. 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. We are spinning our own fates, good or evil, and never to be undone.
Strona 244 - Habit is thus the enormous fly-wheel of society, its most precious conservative agent. It alone is what keeps us all within the bounds of ordinance, and saves the children of fortune from the envious uprisings of the poor.
Strona 244 - 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.
Strona 245 - ... death, the girl herself refused to stay. Anxious inquiries were then, of course, made concerning the pastor's habits, and the solution of the phenomenon was soon obtained. For it appeared, that it had been the old man's custom for years, to walk up and down a passage of his house, into which the kitchen door opened, and to read to himself, with a loud voice, out of his favorite books.
Strona 22 - This includes only the negro population of the South Atlantic, the East South Central and the West South Central States.
Strona 50 - I was affected whilst under its influence with a nervousness which I never felt before or since. A disposition to start upon slight alarms — a want of decision in feeling and acting, which has not usually been my failing, an acute sensibility to trifling inconveniences — and an unnecessary apprehension of contingent misfortunes, rise to my memory as connected with my vegetable diet, although they may very possibly have been entirely the result of the disorder, and not of the cure.
Strona 244 - ... in a word, from which the man can by-and-by no more escape than his coat-sleeve can suddenly fall into a new set of folds. On the whole, it is best he should not escape. It is well for the world that in most of us, by the age of thirty, the character has set like plaster, and will never soften again.
Strona 121 - Arms of old were hands nails and teeth and stones and boughs broken off from the forests, and flame and fire, as soon as they had become known. Afterwards the force of iron and copper was discovered ; and the use of copper was known before that of iron, as its nature is easier to work and it is found in greater quantity.
Strona 52 - What a detestable feeling this fluttering of the heart is! I know it is nothing organic, and that it is entirely nervous; but the sickening effects of it are dispiriting to a degree. Is it the body brings it on the mind, or the mind that inflicts...
Strona 51 - No foxhunter ever prepared himself for the field by more substantial appliances. His table was always provided, in addition to the usually plentiful delicacies of a Scotch breakfast, with some solid article, on which he did most lusty...