Dangerous 2 Provided that where a building erected before the business ninth day of August, one thousand eight hundred and forty-four, within fifty feet from any building for the time being used for any such dangerous business, is pulled down, burnt, or destroyed by tempest, such building may be rebuilt.

3 No person shall establish or carry on a dangerous business to which this section applies in any building or vault, or in the open air, at a less distance than forty feet from any public way, or than fifty feet from any other building or any vacant ground belonging to any person other than his landlord.

4 The following businesses shall be deemed to be dan- gerous businesses within the meaning of this section (that is to say) : The business of the manufacture of matches, ignitible by friction or otherwise, or of other substances liable to sudden explosion, inflammation, or ignition, or of turpentine, naphtha, varnish, tar, resin, or Brunswick black, and any other manufacture dangerous on account of the liability of the materials or substances employed therein to cause sudden fire or explosion.

119 1 No person shall erect any dwelling-house nearer Reguia- than fifty feet to a building used for any noxious business Siding to which this section applies.

Sbnoxiou 2 Provided that where a dwelling-house erected before business" the ninth day of August, one thousand eight hundred and forty-four, within fifty feet from any building for the time being used for any such noxious business, is pulled down, burnt, or destroyed by tempest, such dwelling-house may be rebuilt.