X 
LIST OF MAPS, DIAGKAMS, AND ILLUSTKATIONS. 
PAGE 
Diagram Illustrating Manner of Measuring Angular Distance between 
Terrestrial Objects with a Sextant ...... 85 
Diagrams Illustrating Gen. Sir Chas. Wilson’s Article on Surveying with 
Sextant and Prismatic Compass . . . . . . . 89-95 
Diagrams Illustrating Plane Table Surveying and Orienting the Plane 
Table.98-105 
Diagrams Illustrating Different Methods of Surveying with the Theodolite 117-118 
Diagram showing how to extend Base Line by Triangulation . . . 121 
Mr. Bridges Lee’s Photographic Surveying Camera . . . . 125 
Photograph taken with Mr. Bridges Lee’s Photographic Camera . . 127 
Map showing Method of Surveying and Fixing Positions by Latitudes and 
Azimuths .......... 134 
Diagram accompanying Major Grant’s Method of Predicting Occultations. 174 
Diagram showing the Path of the Moon ...... 180 
Diagram showing that Lunar Distances are not Corrected by Taking Dis¬ 
tances East and West of the Moon . . . . . . 184 
Diagram showing how to Determine whether Magnetic Variation is East 
of West, when Computing Azimuth from Altitude of Sun . . 208 
Star Maps in Pocket at End of Volume. 
