The botanic garden is not very large; in the time of Boerhaave it must have been small indeed, as its history represents it to have been considerably enlarged since that period: in the frontispiece of his Index Horti L. Bat. 1710, it is represented to be a petty square piece of ground. It now occupies about four acres, and is in excellent order: the trees and plants are marked according to the Linnæan system; but it is infinitely inferior in value and arrangement to the botanic gardens of Upsala and of the Dublin Society. Amongst the plants, I approached with the reverence due to it, the venerable remains of vegetable antiquity, in the shape of a palm, which stands in a tub in the open air, supported by a thin frame of iron work; it is about fourteen feet high, and was raised from seed by the celebrated Carolus Clusius, who died professor at Leyden in 1609: the professor who attended me, presented me with a bit of its bark, as a little relic. This tree and the pot in which it grows, are also figured in the frontispiece of Boerhaave’s Index before mentioned: it there appears to have been about half as high as at present, and is said to be the palm mentioned by Linnæus in his Prælectiones in Ordines Naturales Plantarum, p. 27, published by Giseke in 1792, at Hamburgh, which Linnæus suspected to be a chamærops, but which, as the ingenious Dr. Smith observes, his editor rightly refers to the rhapis flabelli formis, Ait. Hort. Kew, v. iii. p. 473. It comes from China and Japan: there is a tree of this kind, and about as large, in the botanic garden at Paris, and another at Pisa. In this garden is also the ginkgo of the Chinese, a standard twenty feet high; Strelitzia reginæ, Ait. Hort. Kew, v. i. p. 285, tab. 2, which has never yet flowered in any garden out of England; the olea laurifolia, a new species according to Mr. Van Royen; Royena lucida in flower, as large as a moderate hawthorn tree, and thought to be very handsome; and a singular plant from the Cape, supposed to be an echites, with a large tuberous root raised high above the surface of the ground, two or three weak stems a foot high, and large dark brown flowers. In the university library is Rauwolf’s Herbarium, which is very magnificent, and the plants well preserved; also Boccone’s Herbarium of the plants described in his Fasciculus Plantarum, published by Morison at Oxford, in 1674; these specimens are very poor: Herman’s Collection of Ceylon Plants is also here, which are a part of the celebrated Herbarium, the rest of which is at Copenhagen; also a volume of West India plants, belonging to Herman, which are very scarce in Holland, and a fine collection of mathematical instruments; amongst other things, a most pure and brilliant prism of Brazil pebble, and a two-inch cube of Iceland refracting spar, perfectly clear and free from blemish.