The Philosophical Magazine: Or Annals of Chemistry, Mathematics, Astronomy, Natural History and General Science, Volumen4Richard Taylor and Company, 1828 |
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Términos y frases comunes
æther alcoate alcohol alkali alumina ammonia analysis angle Annals appears ascertained atmosphere baryta Beachy Head boiling carbonic acid Cloudy colour compound containing crystals decomposed degree deposits determine deutoxide difference of longitude dissolved Ephemeris equal equation Ernst evaporated examined experiments feet fluid formula given grains granite heat Hübn hydrogen inches iron latitude lava lime Linn liquid manganese mass matter means measure memoir mercury meridian metal method micrometer mineral minute molecules months motion muriatic acid nearly nitric nitric acid object-glass observations obtained oxide oxygen p+iq particles peroxide perpendicular phænomena phænomenon Phil plane plants pollen portion potash powder precipitate protoxide psilomelane pyrolusite quantity rain red oxide remarkable respecting result right ascension salt similar solution species specific gravity specimens spheroid stars strata substance sulphuretted sulphuric acid supposed surface telescope temperature tion tube
Pasajes populares
Página 380 - The most accurate in observation, the most philosophical in contemplation, and the most faithful in description, amongst all the botanists of his own, or perhaps any other time.
Página 163 - ... the particle. In a few instances the particle was seen to turn on its longer axis. These motions were such as to satisfy me, after frequently repeated observation, that they arose neither from currents in the fluid, nor from its gradual evaporation, but belonged to the particle itself.
Página 93 - To what extent subterraneous cavities may exist even in common rocks is shown in the limestone caverns of Carniola, some of which contain many hundred thousand cubical feet of air ; and in proportion as the depth of an excavation is greater, so is the air more fit for combustion. The same circumstance which would give alloys of the metals of the earths the power of producing volcanic phenomena, namely...
Página 166 - I never failed to disengage the molecules in sufficient numbers to ascertain their apparent identity in size, form, and motion, with the smaller particles of the grains of pollen. I examined also various products of organic bodies, particularly the gum resins, and substances of vegetable origin, extending my inquiry even to pit-coal ; and in all these bodies molecules were found in abundance. I remark here also, partly as a caution to those who may hereafter engage in the same inquiry, that the dust...