graving consist in its construction in sectional form, and in which are dated October 21, 1873. Further information may the sections being of cast iron, of ashape calculated to econ- be obtained by addressing the manufacturers as above. omize space, to afford a large proportion of heating surface,… … readily distinguished mities of tubes, A, are closed, and meet to from gas, and the lo- RENSHAW’S PATENT SECTIONAL BOILER. form the arch, as re- cality, of the leak presented. On the upper side, however, and near these ends are also screw connections, which communicate with the of Nos. 143 to 147…
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