Chemical News and Journal of Industrial Science, Volum 9Chemical news office, 1864 |
Des de l'interior del llibre
Resultats 1 - 5 de 37.
Pàgina 4
... specific gravity of 750 , which is now easily procurable at about 3s . per gallon . The variety known by the commercial name of turpenzine answers well . The combustion of a quart of this oil , costing 9d . , gives heat sufficient to ...
... specific gravity of 750 , which is now easily procurable at about 3s . per gallon . The variety known by the commercial name of turpenzine answers well . The combustion of a quart of this oil , costing 9d . , gives heat sufficient to ...
Pàgina 5
... specific gravity to secure . We are , of course , well aware that sal volatile is often made by private formula ; and that some which enjoy the highest repute are made by other than the Phar- has tended to swell the records of mortality ...
... specific gravity to secure . We are , of course , well aware that sal volatile is often made by private formula ; and that some which enjoy the highest repute are made by other than the Phar- has tended to swell the records of mortality ...
Pàgina 6
... specific gravity 938 . The first point in the chemical examination was to determine the composition of the crystals deposited in Nos . 1 , 2 , and 3. They were analysed by Mr. Crookes , and were found to consist of bicarbonate of ...
... specific gravity 938 . The first point in the chemical examination was to determine the composition of the crystals deposited in Nos . 1 , 2 , and 3. They were analysed by Mr. Crookes , and were found to consist of bicarbonate of ...
Pàgina 7
... specific gravity of 2.6 . All quartz , for example , has this specific gravity , and not only quartz , but chalcedony , hornstone , and flint , and yet these present no outward sign of crystalline structure . It is , however ...
... specific gravity of 2.6 . All quartz , for example , has this specific gravity , and not only quartz , but chalcedony , hornstone , and flint , and yet these present no outward sign of crystalline structure . It is , however ...
Pàgina 8
... specific gravity of that quartz is , as I said a short time ago , very high as compared with the other - 2-6 . Then we have another form of silica having the same specific gravity , yet not appearing crystalline to the eye , although ...
... specific gravity of that quartz is , as I said a short time ago , very high as compared with the other - 2-6 . Then we have another form of silica having the same specific gravity , yet not appearing crystalline to the eye , although ...
Altres edicions - Mostra-ho tot
Frases i termes més freqüents
acetic acid action alcohol alkali alumina ammonia analysis aniline apparatus applied aqueous arsenic arsenious acid atomic boiling calcium carbonate of lime carbonic acid cent chemical chemistry chemists chloric acid chloride coal colouring matter combustion composition compound containing copper crystallised crystals decomposed decomposition deposited dilute dissolved distillation employed equivalent ether evaporation experiments flame furnace give glass grains gun-cotton heat high temperature hydrated hydrochloric acid hydrogen Improvements inches iodide iron liquid London magnesia manganese manufacture ments mercury metal mineral mixed mixture nitrate nitric acid observed obtained ordinary ounces oxalic oxide oxygen paper paraffine patent peroxide Pharmacopoeia phosphate phosphorus platinum potash potassium powder precipitate preparation present produced Professor proportion protoxide pure quantity reaction residue salt sesquioxide silica silver soda sodium soluble solution specific gravity specimen spectrum substance sulphate sulphide sulphuric acid surface thallium tion tube vapour vessel wire zinc
Passatges populars
Pàgina 259 - The minutes of the previous meeting having been read and confirmed, The PRESIDENT...
Pàgina 104 - Stevenson, president, in the chair. The minutes of the previous meeting having been read and confirmed, Mr.
Pàgina 250 - I claim as my invention, and desire to secure by letters patent, is the obtaining of paraffine oil, or an oil containing paraffine, and paraffine, from bituminous coals, by treating ihem in manner hereinbefore described.
Pàgina 30 - ... further geological movements becomes again exposed to the action of its natural solvents, water and carbonic acid, and is thus restored to active service in the organisms of plants and lower animals, through which it passes, to complete the mighty cycle of its movements into the blood and tissues of the human frame. While circulating thus, age after age, through the three kingdoms of nature, phosphorus is never for a moment free. It is throughout retained in combination with oxygen, and with...
Pàgina 232 - The sensation of light is excited by waves of ether shorter and more quickly recurrent than those which fall beyond the extreme red. But why should iodine stop the former and allow the latter to pass ? The answer to this question no doubt is that the intercepted waves are those whose periods of recurrence coincide with the periods of oscillation possible to the atoms of the dissolved iodine.
Pàgina 232 - His source of heat throughout these comparative experiments consisted of a spiral of platinum wire, raised to incandescence by an electric current of unvarying strength. The quantities of radiant heat absorbed and transmitted by each of the liquids at the respective thicknesses were first determined ; the vapours of these liquids were subsequently examined, the quantities of vapour employed being proportional to the quantities of liquid traversed by the radiant heat. The result of the comparison...
Pàgina 212 - Accordingly he may afford to dispense with the aids supplied by the optical properties of bodies, though even to him they might be of material assistance. The properties alluded to are such as can be applied to the scrutiny of organic substances ; and therefore the examination of the bright lines in flames and incandescent vapours is not considered. This application of optical observation, though not new in principle (for it was clearly enunciated by Mr. Fox Talbot more than thirty years ago), was...
Pàgina 276 - ... cause, that the plaintiff Young is an inventor of this class, and that his patent is entitled to the protection of the law. I find that he has ascertained, by a course of laborious experiments, a particular class of materials among many, and a particular process among many, which has enabled him to create and introduce to the public a useful manufacture, which amply supplies the market with that which, until the use of the materials, and process, and temperature indicated by him, had never been...
Pàgina 305 - They showed* that a burning surface of magnesium wire, which, seen from a point at the sea's level, has an apparent magnitude equal to that of the sun, effects on that point the same chemical action as the sun would do if shining from a cloudless sky at a height of 9° 53
Pàgina 99 - One fluid drachm of this solution mixed with a little mucilage of starch does not acquire a permanent blue colour with the volumetric solution of iodine, until 164 measures of the latter have been added to it.