The false back is to rise till it is as high as the breast of the chimney, and then to close over to the breast *; always observing, if there is a ... If there is no wood in the breast, you may arch over and close even with the lower part of the breast.
|Title||:||Experiments and observations on electricity, made at Philadelphia in America ... To which are added, letters and papers on philosophical subjects. The whole corrected, methodized ... and now first collected into one volume, etc. (Fourth edition.) Edited by Peter Collinson|
|Author||:||Benjamin Franklin, Peter COLLINSON|