| Show cost of ivusic greenhouse maintaining X temperature of CO SO degree degrees in a well ell built using liot hat water osculation for beating beati about oue one tor of food anthracite coil coal will bo for each square feet of 0 f glass la in the housa or it a temperature of 70 degree degrees ii Is need cd ed one toa tun to each I 1 I 1 I 1 feet of ig will be no DO mary for the entire vatar thero are based vioa upon tle tb a matlou that the beating apparatus eppa lo 10 uvil proportioned and properly ie in stal tallon lall and refer refers to a section of ut country where the winter temperature reaches 10 degree below gem |
