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Page 133 - I now mean by elements, as those chymists that speak plainest do by their principles, certain primitive and simple, or perfectly unmingled bodies; which not being made of any other bodies, or of one another, are the ingredients of which all those called perfectly mixt bodies are immediately compounded, and into which they are ultimately resolved...
Page 24 - The objects of the Association are, by periodical and migratory meetings, to promote intercourse between those who are cultivating science in different parts of America, to give a stronger and more general impulse and more systematic direction to scientific research, and to procure for the labors of scientific men increased facilities and a wider usefulness.
Page 141 - It is conceivable that the various kinds of matter, now recognized as different elementary substances, may possess one and the same ultimate or atomic molecule existing in different conditions of movement.
Page 460 - neither slavery nor involuntary servitude, except as a punishment for crime * * shall exist within the United States or any place subject to their jurisdiction.
Page 234 - It is, therefore, of the highest importance to gain a clear insight into the means of modification and coadaptation. At the commencement of my observations it seemed to me probable that a careful study of domesticated animals and of cultivated plants would offer the best chance of making out this obscure problem. Nor have I been disappointed ; in this and in all other perplexing cases I have invariably found that our knowledge, imperfect though it be, of variation under domestication, afforded the...
Page 459 - Congress the power to make all laws which shall be necessary and proper for carrying into execution' "' "all powers vested by this Constitution in the Government of the United States or in any department or officer thereof.
Page 448 - LECONTE were Lewis and John Eatton LeConte, both of whom achieved some prominence for their interest in science. The latter, Major John Eatton LeConte, entered the US Topographical Engineers and was distinguished as a botanist and as an entomologist. His son is the subject of this sketch. After finishing his collegiate education at Mount St. Mary's College, in Emmettsburg, Maryland, LeConte entered the College of Physicians and Surgeons in New York City and was graduated therein 1846. Possessed of...
Page 455 - ... presentation of the subject by the professor, whom they so greatly admired, that not even standing room could be found in the hall. All the aisles would be filled, and even the windows crowded from the outside with eager listeners. His manner of presenting the...