THE following account of the occurrence of swarms of locusts at great elevations in the Himalaya, and these stripping birch trees, is from a privately printed record of an expedition to the north-east of Kinchinjunga, in 1891, by Mr. White, the British resident in Sikkim. That flights of locusts are carried from the plains of India up to great heights in the Himalaya is a well-known fact; but not, I think, in the numbers nor with the results to birch or other forest trees here recorded.