I suspect much there may be two species of water-rats.[e6] Ray says, and Linnæus after him, that the water-rat is web-footed behind. Now I have discovered a rat on the banks of our little stream that is not web-footed, and yet is an excellent swimmer and diver: it answers exactly to the mus amphibius of Linnæus (see Syst. Nat.) which he says "natat in fossis et urinatur."
The Blackcap.
I should be glad to procure one "plantis palmatis." Linnæus seems to be in a puzzle about his mus amphibius, and to doubt whether it differs from his mus terrestris; which if it be, as he allows, the "mus agrestis capite grandi brachyuros," of Ray, is widely different from the water-rat, both in size, make, and manner of life.
As to the falco, which I mentioned in town, I shall take the liberty to send it down to you into Wales; presuming on your candour, that you will excuse me if it should appear as familiar to you as it is strange to me. Though mutilated "qualem dices … antehac fuisse, tales cum sint reliquiæ!"
