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Academy action adze American animals apparatus appears attraction bats become Benjamin Thompson birds body called candle cause chemical chemistry color conductor course direction earth effect electricity electroscope ence existence experiments fact Fahr feet fibre force give glacial glacier glass glottis gutta-percha hand handle heat heat-rays Herbert Spencer inches influence instrument kind labor larynx laws less light liquid living magnet malaria matter means ment metal miles mollusks monads motion movements naphtha Nature northern hemisphere observations organs origin pass period petroleum phenomena phlogiston pith polygamy portion position present produced Prof radiometer rays region religion retina rocks scientific shale side Silurian Society sound species specific gravity spores supposed surface temperature theory tion trachea tricity tube weight whole words
Pàgina 652 - Some drill and bore The solid earth, and from the strata there Extract a register, by which we learn, That he who made it, and revealed its date To Moses, was mistaken in its age.
Pàgina 566 - ... neglected truths, bursting the bonds which kept them down, and either seeking reconciliation with the truth contained in the common opinion, or fronting it as enemies, and setting themselves up, with similar exclusiveness, as the whole truth. The latter case is hitherto the most frequent, as, in the human mind, one-sidedness has always been the rule, and many-sidedness the exception. Hence, even in revolutions of opinion, one part of the truth usually sets while another rises, Even progress,...
Pàgina 653 - The Author of nature has not given laws to the universe, which, like the institutions of men, carry in themselves the elements of their own destruction. He has not permitted, in his works, any symptom of infancy or of old age, or any sign by which we may estimate either their future or their past duration.
Pàgina 691 - He that planted the ear, shall He not hear ? He that formed the eye, shall He not see...
Pàgina 114 - A Short History of Natural Science and of the Progress of Discovery, From the Time of the Greeks to the Present Time.
Pàgina 455 - In no single instance, on the other hand, did the air which had been proved moteless by the searching beam show itself to possess the least power of producing bacterial life or the associated phenomena of putrefaction.
Pàgina 226 - A man may say, if he likes, that the moon is made of green cheese: that is an hypothesis. But another man, who has devoted a great deal of time and attention to the subject, and availed himself of the most powerful telescopes and the results of the observations of others, declares that in his opinion it is probably composed of materials very similar to those of which our own earth is made up: and that is also only an hypothesis.
Pàgina 675 - that many of you are acquainted with the speculations of Lyell and others, especially of Darwin, who tell us that even for a comparatively brief portion of recent geological history three hundred millions of years will not suffice ! We say — so much the worse for geology as at present understood by its chief authorities, for ... physical considerations render it impossible that more than ten or fifteen millions of years can be granted.
Pàgina 656 - ... of their attraction beyond calculable limits. Under such circumstances we might have years of unequal length, and seasons of capricious temperature ; planets and moons of portentous size and aspect glaring and disappearing at uncertain intervals ; tides like deluges sweeping over whole continents ; and, perhaps, the collision of two of the planets, and the consequent destruction of all organization on both of them.