The London journal of arts and sciences (and repertory of patent inventions) [afterw.] Newton's London journal of arts and sciences, Bind 4William Newton 1822 |
Fra bogen
Resultater 1-5 af 13
Side 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 ...
Side 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 ...
Side 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 ...
Side 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 bę 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 bę allowed a place in the garden , Peaches . - The Flat Peach of China . This ...
Side 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 . 1 , 1 , are two small web rollers , over which the feeding tapes , k , k , pass . At ...
... 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 . 1 , 1 , are two small web rollers , over which the feeding tapes , k , k , pass . At ...
Andre udgaver - Se alle
Almindelige termer og sætninger
1st Sat 2d Sat acid action advantage alpaco anchor animal annatto apparatus appears applied axle balance spring 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 manual labour 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
Populære passager
Side 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.
Side 112 - Dendrologia Britannica, or trees and shrubs that will live in the open air of Brttain during the whole year, to be illustrated by original descriptions and coloured plates from living plants.
Side 204 - Memoirs of Benvenuto Cellini, a Florentine Artist, written by himself, containing a -variety of Information respecting the Arts, and the History of the Sixteenth Century.
Side 259 - An HISTORICAL and DESCRIPTIVE ACCOUNT of the STEAM ENGINE; comprising a general View of the various Modes of employing Elastic Vapour as a "Prime Mover in Mechanics.
Side 274 - ... if it make a slight impression, denoting some degree of malleability, the iron is of a good quality, provided it be uniform; if fragments fly off, and no sensible indentation be made, the iron will be hard and brittle.
Side 146 - ... repairs in the machinery ; and should the supply of corn, &c. at any time, fall off, it is not necessary that the labour of the prisoners should be suspended; nor can they be aware of the circumstance. The...
Side 147 - 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 to ring the bell,...
Side 183 - Inrolled, March, 1822. To THOMAS MOTLEY, of the Strand, London, for certain Improvements in the Construction of Candlesticks or Lamps, and in Candles to be burned therein. THIS invention consists of an apparatus for burning tallow, cocoa-nut oil, palm oil, or a mixture of these or other concrete oleaginous substance, for the purposes of illumination ; which, by the use of this apparatus, may...
Side 268 - ... Commons, on Steamengines and Furnaces ; and a Chronological Catalogue of Works descriptive of the Steam-engine. In estimating the value of a work like the present, we must be guided rather by the useful facts detailed, than by the quantity of letter-press. A work of so. much practical importance required the historian's severe castigation. Much of the labour, therefore, bestowed . on such a work, must be wholly unknown, except to those who are more immediately conversant with historical research,...
Side 273 - N. down to hit. 69 deg. comprising an extent (reckoning the indentations and sinuosities observed) of about 800 miles ! The coast visited by Captain Scoresby is a continuation towards the North of that on which were planted the ancient colonies from Iceland, the fate of which is still veiled in such deep obscurity.