I'hotixjiHitUir 1*1 -i, III' li, s mid I'^-t i nil n ,■• 



nin 



of an ohject. ll ran iiidfcd he acliu\ cd ii uw i)bjwt \m- iiianimaU' by plucin^' it 

 on a reticulated tunital)lt' and rotating this turntal)le tlirougli 45 or 90 to 

 obtain the second j)hotograj)h with the same camera. Of" course if we can 

 find the coordinates of one |M)int we can find those of any numl>er, and the 



Diiiu;riiin vii. 



distances between them can then be found in the usual way. Another method 

 is to find a whole series of points T and S or construct plan and elevation 

 (hawings of the object from the two photographs. 



A paper by Galton entitled " Photograpliic measurement of Hoi-ses and 



