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FULL AIR EXT; i A'"Tag MA. H1;E. TO THE EDITOR. OF LLè MINI G JOURNAL. -eii up to the [,,il)licad, "cry aild it)%.elliioii wilich. I co;i,.(,iv" of' us,- (u'ne;s, 1 trust YOIJ "ii' fa\'OIJr me be nsertiuo- ia yi),ir joi;t-iiul itie p-,tt-ticu ';a- Havniff long: perceived the fallacy and inefficacy of giving free air and salubrity "mines and sh p by \"ènlif,-t;(;11, wb c'i no*, oil! requ re., great po -er to force the air in, but when su toiced, i, vei-y put lia iy admixes with ihe foul aii, so that by a fair ca'culatiou, oi eight or ten cubic feet of a; mospheric air vent ilat > d not one foot of Coni air be so incorporated the, e- with, as to be carried out, when it again escapes at tile mouth of the shait 1, therefore, have contrived a mdchiue, which with very email power, teversing the principle of ventilation for extraction, will ren- der all mines and ships pel tectl.v Jo'tlubrious and v healthy, putting au end to the calamity arising from Ihe explosion of loul air, and rendering vessels with horses and troops on board, in the worst weather, perfectly cool and healthy. Having had good reasoa to fear this invention would be pirated I determined to giCe it up for the public good, which I officially tio,icied to the Rihl Hon. the Solicitor General, and which was duly accepted by him. The calculation of the performance of my extracting machine is as follows â A machine worked by one man will extract from 1,400 to 2,000cubic ieei of foul air per minute, being equal to S,eOJ cubic feet ventilated in. A iiiiiehikie ot i wo-and-a-hatf-horse steam power. will ex ract 12.000 cubic teet of foul air per minu,e, bein^- equal to 92,i)00 cubic (eel veutila ed in. A machine of iour-hor»e ste rn power will ox'ract 24,0o0 cubic feet of foul air per minute, beinrr equal to 1921100 cubic feet vemi'ated in. These machines are very low i,, price, light and portable; and as 1 derive no advantage irom the maOIl/acturp, they will be fabricated at the lowest possible remunerating prices, and can be affixed to mines and ships without trouble or expense of any conseqnence. THORNHILL WARRINGTON. Hereford, Jan. 12.

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FROnt THE LONDON GASSTXES…

Family Notices

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BREC0W) Saturday, Jan. 27,…

.......... TO THE EDITOR OF…

-----==--......--FAIRS FOR…

GREAT WESTERN RAILWAY. ...

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