Just before receiving your July number, which, by the way, absence prevented my receipt of until the middle of the month, I encountered on the edge of the little-used trotting track at Ramsey's, a station on the New York and Erie road, a specimen of Asclepias obtusifolia, one of the two species of northern milkweeds which have the peculiarity of bearing but a single umbel ot flowers at the termination of an undivided stem.

Asclepias obtusifolia is seldom found growing in groups, the occasional plants seen by the writer during the past summer being almost in-variably single specimens, and standing in widely separated positions or localities.

On two of the flowers of the umbel of the Ramsey plant, I noticed the ordinary honey-producing bee, apparently feeding. As, after jarring the plant, these insects did not seem disposed to quit their places, I examined them more closely, and found them to be quite dead with poison, as I then thought. Pulling up the plant, I carried it to New York city, and the umbel and two upper leaves as far beyond as Ocean Grove. During the transfer of 125 miles, the umbel was much blown about, and yet both the insects maintained to the journey's end the attachment that had originally proved fatal to them. Shortly after my arrival at Ocean Grove, the July number of the Gardener's Monthly was handed me, and I therein found on page 219, a complete revelation of what had seemed so mysterious.