THE British Mycological Society is one of the most vigorous scientific bodies in Great Britain. and this is reflected in its Transactions, of which vol. 11, Parts 1 and 2, edited by Carleton Rea and J. Ramsbottom, has recently been published (London: Cambridge University Press, 15s. net). Amongst its most useful activities are the spring and autumn forays, when members visit some specially chosen locality and spend several days studying lichens, mycetozoa, and fungi in the field. These forays are almost unique training grounds for students of systematic mycology, and at the same time give opportunity for the very valuable work of recording local floras and thus adding permanently to myco Great Britain. logical science. The published lists, as for example those of the Tintern and Dublin Forays of 1925 which appear in this issue, nearly always show a number of additions to the British flora and not infrequently species new to science.