17^ Mr Galbraith on Surveying and Levelling. 



Table V. To convert Distances in Feet on the surface of the Terrestrial 

 Spheroid into Seconds of Arc j when the compression, or i = 0.00824^ that 

 adopted in the Trigonomet)'ical Survey. 



Table VI. Correction of y< for p" . Suhtractive. 



By means of this Table, Logarithmic Tables to five places of decimals^ 

 such as Lalande's, may be employed in Trigonometrical Surveying. 



