The London Journal of Arts and Sciences, Volume 4Sherwood, Neely, and Jones, 1822 Containing reports of all new patents, with a description of their respective principles and properties: also, original communications on subjects connected with science and philosophy; particularly such as embrace the most recent inventions and dicoveries in practical mechanics. |
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Page 38
... leaves of plants abstract oxygen from confined atmospheres ; at least , when placed in the shade , though they do not inhale all the oygen which disappears ; ` and it has been further proved , from experiment , that the leaves of plants ...
... leaves of plants abstract oxygen from confined atmospheres ; at least , when placed in the shade , though they do not inhale all the oygen which disappears ; ` and it has been further proved , from experiment , that the leaves of plants ...
Page 39
... leaves of aqua- tics , succulent plants and evergreens consume , in equal circumstances , less oxygen than the leaves of other plants . The roots , wood , and petals , and in short , all parts not green , with the exception of some ...
... leaves of aqua- tics , succulent plants and evergreens consume , in equal circumstances , less oxygen than the leaves of other plants . The roots , wood , and petals , and in short , all parts not green , with the exception of some ...
Page 41
... leaves decaying , and giving up their extractive juices to the other parts . Thus it appears that oxygen gas , or that constituent part of the atmospheric air , which has been found in- dispensable to the life of animals , is also ...
... leaves decaying , and giving up their extractive juices to the other parts . Thus it appears that oxygen gas , or that constituent part of the atmospheric air , which has been found in- dispensable to the life of animals , is also ...
Page 45
... leaf ; fruit small . Except , however , as an ornamental tree , which its large foliage and vigorous growth entitle it to be considered , it will scarcely be allowed a place in the garden . Peaches . - The Flat Peach of China . This ...
... leaf ; fruit small . Except , however , as an ornamental tree , which its large foliage and vigorous growth entitle it to be considered , it will scarcely be allowed a place in the garden . Peaches . - The Flat Peach of China . This ...
Page 59
... leaves the arm , f , or g , its pulley , h , and web roller , i , are carried back to their former posi- tion by the gravity of the weight , w . ,, are two small web rollers , over which the feeding tapes , k , k , pass . At % , % , are ...
... leaves the arm , f , or g , its pulley , h , and web roller , i , are carried back to their former posi- tion by the gravity of the weight , w . ,, are two small web rollers , over which the feeding tapes , k , k , pass . At % , % , are ...
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1st Sat 3d Sat acid action alpaco anchor animal annatto apparatus appears applied axle balance spring bars boat boiler bottom carbonic acid carriage chevaux-de-frise colour conj consists construction containing contrivance copper Coppermine River cylinder described Diff drawing rollers eclipsed effect employed engine engraving essential oil experiments feet fixed furnaces heat holes Holyhead improved inches Institution invention iron joints Journal of Arts June labour lamp leeches length lever London machine magnesia manufacture means ment metal method Middlesex mode months for inrolment muriate observations obtained operation passing patent Perigee piece pipe placed plate present produced proposed purpose quantity reservoir rollers ropes round screw shank shewn side Society spade specific gravity specification spring steam steam-engine substance surface tallow temperature timber tion tube upper verdigris vessel vicuna volume wheel wrought iron YORK PUBLIC LIBRARY
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Page 36 - LOUDON'S ENCYCLOPEDIA of AGRICULTURE: comprising the Laying-out, Improvement, and Management of Landed Property, and the Cultivation and Economy of the Productions of Agriculture. With 1,100 Woodcuts. 8vo. 21s. London's Encyclopaedia of Gardening : comprising the Theory and Practice of Horticulture, Floriculture, Arboriculture, and Landscape Gardening.
Page 169 - Middlesex, for certain improvements in the construction of lamps, whereby they are rendered capable of burning concrete oils, animal fat, and other similar inflammable substances.
Page 147 - It may be added, that when the machinery of the mill has attained its proper speed, certain balls rise by their centrifugal force, so as to draw a box below the reach of a bell handle, which will then cease to ring a bell, placed in some convenient situation for the purpose. But, should the men at the wheels cease to keep up the requisite speed in the mill-work, the balls will descend, and a projecting pin on the box striking the handle, placed in the proper situation for that purpose, will continue...
Page 263 - ... pounds, two hundred and thirty-two feet, in a minute ; and of working, on an average, eight hours per day. This is equivalent to the work of thirty-four men; twenty-five square feet of canvas performing the average work of a day-labourer.
Page 148 - Roofs or Beams; and Gladstone's, for a Method of increasing the Strength of Timbers; to these it may be useful to add the two following Inventions. Mr. Smart, of Westminster Bridge Road, having been long convinced of the great convenience of flat roofs in London, and other great towns, where space is valuable, considered that their principal objection arose from the necessity of very strong bearings, which were necessarily weighty and expensive. To obviate this he devised the Bow and String Rafter,...
Page 157 - Is magnetism identical with electricity, or an independent agent put in motion or activity by electricity? Queries of this kind might be considerably multiplied, and stated in more precise and various forms : the solution of them, it must be allowed, is of the highest importance; and though some persons have undertaken to answer them in the most positive manner...
Page 257 - ... this way than when salted. The sugar gives no disagreeable taste. This process is particularly valuable in making what is called Kippered Salmon; and the fish preserved in this manner are far superior in quality and flavour to those which are salted or rit smoked.
Page 40 - ... the obstacles that present themselves to the passage of the oxygen in the former case, on account of the greater depth and smaller surface of the root. It was further observed, that roots which penetrate into dung, or. into pipes conducting water, divide into immense numbers of fibres, and form what is called, the fox-tail root ; but it is, because they cannot continue to vegetate, except by increasing their points of contact, with the small quantity of oxygen found in such mediums. Lastly, it...
Page 98 - In every instance that an oil, whether volatile or fixed, was heated with corrosive sublimate, mutual decomposition took place, charcoal was evolved, and muriatic acid and calomel formed. Besides, when oil of turpentine was used, some traces of artificial camphor appeared...
Page 177 - ... or the ship would not be in danger of being pooped, although no dead-lights were employed; at the same time it would be a sufficient protection to cabin windows, for it is only when water is kept in a compact body that it is...