CONTENTS. 1 1 
Spirit leveling — Continued. page. 
Denison quadrangle (Indian Territory-Texas) — Continued. 
From Choctaw, Texas, west along the Texas and Pacific Railway to 
Southmayd, Texas 1 29 
Along the joint line of Texas and Pacific and Missouri, Kansas and 
Texas railroads 129 
From Ethel, Grayson County, Texas, east along county roads to 
Howe, Grayson County, Texas 1 30 
On Houston and Texas Central Railroad 130 
From Sherman, Grayson County, Texas, along county road north to 
Pottsboro, Grayson County, Texas; then west to Dexter, Cook 
County, Texas; then south to Whitesboro, Grayson County, Texas. . 130 
From Southmayd, Grayson County, Texas, southeast on county road 
to Mormon Grove, Grayson County, Texas; then northeast to Sher- 
man, Texas 131 
Along county road from Pottsboro, Grayson County, Texas, to mean- 
der corner on Red River of T. 8 S., Rs. 5 and 6 E., of the Chickasaw 
Survey 131 
Denison, Texas 131 
Line along the Missouri, Kansas and Texas Railroad from Pottsboro, 
Texas, west to Woodbine, Texas 131 
Gainesville quadrangle (Texas-Indian Territory) - 131 
Gainesville 132 
From Gainesville, Texas, along Gulf, Colorado and Santa Fe Railway 
to Marietta, Indian Territory 132 
Along township and section lines 132 
Montague quadrangle (Texas-Indian Territory) 133 
From Ryan, along the Chicago, Rock Island and Pacific Railway to 
Terral 133 
Along township and section lines 1 33 
Addington, Rush Springs, and Chickasha quadrangles 133 
Along ninety-eighth meridian between Red and Canadian rivers 133 
ILLUSTRATIONS 
Plate I. Map showing triangulation in Indian Territory 16 
Fig. 1. Map of Indian Territory, showing quadrangle nanie;- 83 
