THE part of the Transactions of the Linncan Society just published, forming the 2nd part of vol. xxviii, consists of two elaborate botanical papers; “Memoir on the Spermogones and Pycnides of Crustaceous Lichens” by Dr. Lauder Lindsay; and “On the Hippocrateaceae of South America” by Mr. Miers. Of the important features of the latter paper we gave a sketch on the occasion of its being read before the Society. It is illustrated by seventeen very beautiful plates executed by the author. The first is an extremely elaborate paper, illustrating the great variation in the spermogones and pycnides in the same species of lichen, and even in the same individual. For this purpose as many as twelve or even 20 specimens of the same species, preserved in various herbaria, are in some cases minutely described. This paper is also illustrated by eight coloured plates.