2i6 the botany of the KACHIN hills north-east of MYITkYlNA. 
preservation of many specimens was not available. During this 
period, however, Lieutenant Pottinger from time to time noted the 
presence of various plants; these have been included in their proper 
place in the systematic census of Kachin Hill species ; in order to 
obviate any possible error they have not, however, been used at all 
in the passages wherein the affinities of the Kachin flora are dis- 
cussed. To this end, all such references are enclosed in square 
brackets and the species in question have not been accorded a serial 
number. 
Lieutenant Pottinger’s contribution to our knowledge of the 
Kachin flora has not, however, been confined to the making of a 
collection during his journey. While passing through Myitkyina he 
was so fj)rtunate as to enlist the sympathies of Lieutenant Cruddas, 
S.C., Commandant of the battalion of Frontier Police stationed there, 
on behalf of the Royal Botanic Garden. With much kindness 
Lieutenant Cruddas undertook to look after and assist in every way 
in his power, a native collector belonging to the Garden establish- 
ment. This roan, Shaik Mokim, thanks to the help and care of 
Lieutenant Cruddas, has been able to send at intervals during 1897 
a most interesting collection of specimens from the vicinity of 
Myitkyina itself, and from the neighbourhood of the various out-posts 
held by the force that Lieutenant Cruddas commands'. He has also 
accompanied Lieutenant Cruddas during tours made in the course 
of his official duties, collecting by the way, The specimens thus 
obtained, having been mainly collected during the months subsequent 
to the termination of Lieutenant Pottinger’s expedition, largely 
augment the Kachin list, and assist us greatly in forming a general 
impression of the nature and affinities of the flora of the region. 
All the specimens obtained during Lieutenant Pottinger’s expedition 
are indicated by (E) ; those subsequently collected by the Garden 
collector are marked (C). 
§ 2.— The Vegetation of* the Kachin Hills. 
[ £. Pottinger. ] 
Myitkyina, the starting point of the expedition, is situated on the 
right bank of the Irrawaday, in a well-watered plain stretching west- 
ward towards Mogaung. A large portion of this plain was formerly 
devoted to rice-cultivation, but wars between the Burmese and the 
Kachins, about 1882, devastated the greater part of the country, 
which has consequently reverted to jungle. As a general rule this 
jungle is very dense, and is often impenetrable owing to the under- 
