80 TOPOGRAPHICAL SURVEYS. 



by his successful work in these regions, and the new work was 

 connected with that done further eastward in 1884-85. The Nagas 

 met with south of the Patkoi have some cruel characteristics, 

 and are addicted to human sacrifices ; but they nevertheless were 

 friendly disposed towards our troops, and gave useful assistance in 

 various ways. 



This piece of exploration was the last accomplished by No. 6 

 party, which was finally dissolved on the 16th July 1885. A 

 retrospect of its history since its formation in 1863 is given by 

 Mr. Ogle at page viii of the Appendix to the Report of the Surveyor- 

 General for 1884-85. 



The important survey of Sikkim which was carried out by 

 Lieut. Harman after completion of his work in Northern Assam is 

 described at pages 126 and 127, infra. 



Rajputctna and Simla. — This party (No. 7) was divided in two 

 detachments in 1876-77, Lieutenant E. P. Leach, R.E., being 

 engaged on an elaborately contoured survey of the Observatory hill, 

 Simla, and Mr. R. Todd in prosecuting the detail survey in the 

 desert portions of the Marwar (Jodhpur), Shekawati, and Bikanir 

 States in Eajputana, as well as a large scale survey of the city 

 and environs of Jodhpur and 50 linear miles of forest reserve 

 boundaries in Ajmere and Merwara. On the return of the party 

 to recess quarters the triangulation for the survey of the 

 approaches to Simla and of the several military cantonments 

 between Simla and the plains was taken in hand and carried over 

 120 miles. 



Owing to the failure next year of the rains in Central and 

 Southern India, it was not feasible to send more than a small 

 portion of the Rajputana party to that province, so the remainder 

 were employed in the neighbourhood of Simla, where a total area of 

 104 square miles of roads and adjacent strips of country was 

 surveyed on the 6-inch scale, together with plans of Subathu and 

 Kasauli cantonments. The system of topography employed by 

 Colonel De Pree for the hills in these surveys was the same as 

 employed by Lieutenant E. P. Leach in the previous season, i.e., a 

 combination of contour lines, sketched by eye, with other contour 

 lines which had been accurately determined by water level, care- 

 fully followed in succession by the topographers and accurately 

 delineated on the plane-table. Thus on the 6-inch maps the true 



