And not only about the springs, but in them, often choking the channels until little lakes are formed, are found many plants that know no summer of growth and then a long interval of rest. The conditions of the season are too nearly alike, and while in winter there is less increase, growth never entirely ceases, and certainly the bright green of the delicate foliage is never dulled. Anacharis, or water-weed, I find in profusion at all the larger springs; if not, then callitriche, or water-starwort. The latter is as delicate as the finer ferns, and often conceals much of the water in which it grows, as it has both floating and submerged leaves. In both these plants fish, frogs, and salamanders and large aquatic insects congregate, and are so effectually hidden that when standing on the side of the spring basin a person is not likely to see any living thing, and if the spirit of investigation does not move him he will go away thinking animal life is hibernating, for so indeed it is set down in many books. But it does not always do to plunge the hand in among the weeds, and so try to land whatever may be tangled in the mass you pull ashore. Some of the insects resent such interference by biting severely—the water-boatmen, or _Notonectæ_, for instance—and they have the advantage of seeing all that is going on in the world about them, for they swim upon their backs. A delicate and beautifully marked sunfish that is silvery white with inky black bands across it is common in the Delaware tide-water meadows, and is found nowhere else. Recently in a spring pool, where the flow of water was almost stopped by aquatic mosses, _Hypnum_ and _Fontinalis_, I found nearly a hundred of these fish gathered in a little space. All were active, and so vigorous that an abundant food supply can be presupposed; but I did not bring the microscope to bear upon this question, and it is upon minute forms of life such as would be readily overlooked by the casual observer that they subsist. But, as is everywhere the case, these fish are not free from molestation, although to the onlooker they seem to be dwelling in a paradise. There is a huge insect, murderous as a tiger, that singles them out, I have thought, from the hosts of more commonplace species which we can easily spare. It is known as a _Belostoma_, and has not, so far as I can learn, any common name. If they were better known they probably would have a dozen. They are “wide and flat-bodied aquatic insects, of more or less ovate outline, furnished with powerful flattened swimming legs,” and the front ones are “fitted for seizing and holding tightly the victims upon which they pounce.” When I found the timid banded sunfish huddled together in the water moss I thought of the savage _Belostoma_ and hunted for them. None seemed to be lurking in the moss, but just beyond, in an open space where twigs had drifted and dead leaves lay about, I found two of them,