Plants, like human beings, are continually extending the area of settlements, and forms new to old localities are continually appearing. Thus the local botanist never feels that he has found all that is to be seen, but goes over ground, looking anxiously for something, that he has often thoroughly explored. Just now the botanists of Bucks County and Philadelphia are rejoicing at the discovery in their limits of Archangelica atropurpurea, Asclepias obtusifolia, and Poa sylvestris. There is a large number of good local botanists in this region, of whom Dr. I. S. Moyer has a wide reputation.