While inspecting, during the past summer, the fruit orchards of a friend residing in this neighbourhood, my attention was attracted by the peculiar appearance of the leaves of a young plum tree. At the first glance, I thought it might be affected by aphides, but, on closer examination, I found unmistakable evidence of the work of some leaf-cutting bee, in the circular holes in many of the leaves, and on opening one of the coils of leaves, of which there were four or five, I discovered the curiorts chambers of the bee, each containing a half-grown grub, comfortably ensconced, with its modicum of food.