day of done in and about the premises, by virtueof these presents. In witness whereof I have hereunto set my hand and seal the in the year of our Lord one thousand eight hundred and fourteen. Signed sealed and delivered A. B. (SEAL.) in the pesence of us. A General Warrant of Attorney. To all whom these presents shall come, know ye, that I John Web of Poplin do hereby constitute and appoint A. Thing, of Sutton, my lawful attorney, in all cases, real, personal, and mixed, moved or to be moved for me or against me, in any court of law, in my name to appear, plead and pursue unto final judgment and execution, with power of substitution. In witness whereof I have hereunto set my hand and seal this 11th day of April Anno Domini 1814. Signed sealed and delivered J. W. (SEAL) Duodecimals, or Cross Multiplication To measure a plain surface whose ends are To measure a right angled triangle To measuré boards with the board rule To measure boards with Gunter's sliding rule ib. To measure joists and plank ib. 150 -150 To find the area of a sector of a circle 153 To measure a segment of a circle 154 155 To find the area of an ellipses, or oval 157 To find the area of a globe or sphere ibo 158 159 ib. 160 ib. 162 narrowest 16.5 To find the solidity of a segment of a globe To find the solidity of the middle zone of a globe 167 To find the solidity of a spheroid, or ellipsoid 168 To find the solidity of the middle frustum of a. To find the solidity of an elliptic spindle To find the solidity of the middle frustum of Timber measure, the common method ib. To find the solididity of round timber includ- 174 ib. To find the solidity of a round and tapering To find the solidity of a hewn stick of timber To find the solidity of tapering hewn timber ib Having the base of a pile of wood or bark giv- en, to know how high to build, for any given ib. To find the solidity of a parallelopipedon 181 To find the solidity of any cubical figure. c. ib. GUAGING. To guage a cask representing the middle frus- To guage a cask representing two frustums of USEFUL FORMS OF WRITINGS. Bills of exchange 208 Notes |