66 GREAT TRIGONOMETRICAL SURVEY OF INDIA. 



is saw tlie operations advance both northwards and southwards, 

 and in 1887-88 the entire coast triangulation from False Point to 

 Point Calimere, in the Tanjore district, was completed. Mr. Ryall, 

 who had assumed charge in 1885-86, had hoped to close his work on 

 to the station of the Negapatam Minor Series, but these were found 

 to be so inconveniently situated and so hemmed in by gardens and 

 trees, that a carefully executed traverse, 60 miles in length, was 

 executed, and a junction effected with stations of the Great 

 Trigonometrical Survey. 



The triangulation along the Madras coast having been thus 

 completed in 1887-88, the following year saw the party transferred 

 to Lower Burma for the purpose of carrying out similar work there 

 and fixing artificial beacons, as well as natural landmarks, at con- 

 venient intervals within sight of the sea for the Marine Surveyors 

 to base their work upon. One hundred and fifty-seven miles of 

 triangulation of this description were completed in 1888-89, reaching 

 from Cape Negrais to Sandoway, and about 170 miles in the 

 following season. A commencement was also made of the principal 

 triangulation for Upper Burma on the meridian of 97°. The series 

 emanated from a .side of the Eastern Frontier Series near Toungoo, 

 and is destined to proceed northwards as far as Mandalay in the first 

 instance. Owing to climatic and other difficulties, the progress 

 during the past season was limited to the selection of two figures 

 and the building of the observing stations at the angles, but the 

 work was carried for 50 miles further in 1889-90, and six new 

 principal stations were fixed. For the Marine Surveys, 35 points 

 were fixed during the same year along a distance of 170 miles 

 from Kutabdia light-house off the coast of Chittagong, Bengal, 

 to Akyab, in Burma. 



The series of secondary triangles emanating from the Great 

 Indus Series and runniug along the parallel of 30° N. latitude, 

 which had been commenced in the previous year to furnish a basis 

 for future work in Baluchistan was continued for a direct distance 

 of 115 miles to Quetta. Observations at four stations still remained 

 to carry the series to the Khwaja Amran range. 



In this province and in the other new province of Upper Burma 

 a large field still awaits the exertions of the Indian triangulation 

 parties. 



