This great forest, which extends for hundreds of miles along the slopes of the Himalaya, reaches up from the plains to the snows. In the lower part it is a truly tropical forest, and about a tropical forest there is something peculiarly mysterious. A strange stillness is over all. Not, indeed, the absolute silence of the desert, where literally not a sound is heard; for here in the forest, even during the hot noonday quiet, there is always the purring of insect life. But that stillness when not a leaf moves and no harsh noise is heard, when an impressive hush is laid upon the scene and we seem to be in some mysterious Presence dominating all about us and rousing our expectancy. A kind of awe seizes us, and with it also comes a keen exhilaration. We can see at most for a hundred yards in any direction. But we know that the forest extends like this for hundreds of miles. And we realise that if we wandered off the track we might never find it again. It is all very awe-inspiring, and in some ways frightening. Still, we are thrilled by the sight of such a profusion, intensity, and variety of life. In this hot, steamy atmosphere plants and trees grow in luxuriant abundance. Every inch of soil is occupied. And these forests are not like woods in England, which contain only three or four species--oaks, beeches, sycamores, etc. In these Sikkim forests we seldom see two trees of the same kind standing next each other. One tree may be more prevalent than others, but there is always great variety in the forms and colours of the stems, the branches, the leaves, the flowers, the habit of growth. There are trees of immense height with tall, strong, straight stems, and there are shrubs like hydrangeas of every size and description. There are climbers as huge as cables. And there are gentle little plants hardly rising above the ground. There is no end to the variety of plant life, and we have an inner spring of delight as we come across treasure after treasure that hitherto we had only seen reared with infinite care in some expensive hot-house.