2 8 SUGGESTIONS ON THE COLLECTING AND STUDY OF THE MINUTE FUNGI OF ESSEX. By' M. C. COOKE, M.A., LL.D., A.L.S., &c. [Read March 1st, 1890.] CONSEQUENT upon some observations made recently at one of the Meetings of the Club on the possibility of increasing its activ- ity and utility in the direction of exploration and recording of the minute vegetation of Epping Forest, an opportunity has been af- forded for the explanation of the details of such investigation. It may be premised that the first essential consists in a few earn- est and energetic agents for the pursuit of this new departure. In all these experiments success does not depend so much on the number of participants as in their determination. A few, even a very few, animated by the right spirit, will accomplish more than a great many, where the animation is wanting, and the enthusiasm de- ficient. Where two or three are gathered together for the accom- plishment of a definite object, success may more readily be predicted than from the surging turbulence of a crowd. The primary resolu- tion must be taken to do something, to do it persistently, and to do it systematically, the object now being to explore and record the occurrence of some groups of the smaller fungi, which have not come under review during the annual "forays" of the Club. The first, and perhaps the easiest, of all these groups are the Uredinous parasites of living plants—the "rusts," "smuts," and "mildews," of the cultivator of the soil. Important because affect- ing the production of food for man and beast, because they are in effect the diseases of plants, analogous to the diseases which affect the animal kingdom. It must be assumed, in the first instance, that the persons about to engage in this investigation have some knowledge of the common plants of the locality, or, even if they have not a critical knowledge of species, that they will take the trouble to obtain the assistance of those who possess it, or else collect material sufficient for deter- mination. In order to give value to such investigations it must be known what the particular plant is—its specific identity—which is afflicted by disease.