The natural sciences are in so many ways the handmaids of horticulture, that we are all particularly interested in their prosperity. The Philadelphia institution has the finest collections, taken as a whole, of any in America; and its printed proceedings take a high rank all over the world. The old building, though very large, was completely inadequate to the collections, and its large botanical department had to be kept in what was contemptuously styled by those familiar with more favored buildings, a "dust bin."

Some ten years ago a move was made to put up the building we illustrate, and the hope entertained by some that it might be effected before the American "one hundred years" should arrive. Money was subscribed from friends continuously from that time to this, and only as much work done as could be paid for. About a quarter of a million of dollars has been raised in this way, and one wing of this building - this much larger than the whole of the old building - has at length been completed, and the collections removed there,

. though not yet arranged. Considering that this has all been done without any remarkable legacies and bequests, that have so often aided similar institutions, and in this way a whole city get the credit of what is really due to the generosity of one or two individuals, it speaks very well for the general interest felt in science in Philadelphia. The main hall and south wing will yet have to be built sometime. It may be that the good President, Dr. Ruschenberger, who, with a few devoted friends, have worked towards the accomplishment of what has been done, with an energy and determination against obstacles that very few know of, many not live to see the final building finished; and yet it is not at all impossible that when the great public see how much has been done with a few talents, may be tempted to aid the workers soon with a good deal more.