Note 1 — INTRODUCTION.

The discovery by Sarat Chandra in 1882 of the true dimensions and shape of Lake Palti,1 seemed to Sir Alfred Croft so important that in June, 1883, he despatched the lama to cover the same ground in order to check off, verify, and complete the survey of the Babu. This he successfully did, adding only to the latter’s work a small portion to the south-east of the lake, but establishing the great accuracy of the previous survey. He also explored the Lhobrak (Manas) valley, and again visited Lhasa, returning to India by way of the Tang la and Chumbi valley, and reaching Darjiling in December of the same year. A report of this work was prepared by Colonel, now Sir Thomas, Holdich, and appeared in the “Report of the Explorations in Sikkim, Bhutan, and Tibet from 1856 to 1886,” which was published in 1889 by the Trigonometrical Survey of India, and is frequently quoted in the notes to the present narrative.