96 SOAR : WATER MITES OF EPPING FOREST. death I have been unable to ascertain, but I believe it was in or about February 1892. His end was a sad one for a man of his tastes and attainments. Gibbs formed a somewhat striking figure, well known in Chelmsford in his day, chiefly because of his tallness and spareness and the fact that he was dressed always in frock-coat and tall silk hat. The accompanying portrait of him (for which I am indebted to Mr. Mothersole) was taken in 1888 during a summer outing of the Chelmsford Odd Volumes. Though probably self-educated, Gibbs was a man of real ability. His letters to me might have been written by some learned professor, so far as anyone could infer from their diction and hand-writing. Of botany, his knowledge was very far from superficial, though confined in the main to the structure and classification of plants. Other branches of the science interested him, I fancy, but little. Astronomy was also a study which fascinated him, and (to quote his own words) he took "delight in contemplating the heavenly bodies." The fine collection of Essex books brought together by our member, Mr. John Avery, contains a complete series of all the booklets and pam- phlets published by Gibbs of which I know anything. Of Gibbs, as of so many such men, one may say that, given a more favourable up-bringing and environment, he might have attained distinction. THE WATER MITES (Hydracarina) OF EPPING FOREST. By CHARLES D. SOAR, F.L.S., F.R.M.S. With Illustrations. [Read 25th November 1916.] ONE of the most delightful and profitable of the naturalist's collecting grounds near London is that part of Essex known as Epping Forest. It has been worked by several well-known writers on Natural History, and lists have been published giving all the known species in several branches of Zoological and Botanical study. In Mr. E. N. Buxton's Guide to the Forest (1898), we find lists of all the Vertebrates, Birds, and Flowering plants ; also some interesting notes on the Fungi and Pond life, by Dr. M. C. Cooke. Elsewhere, the Entomostraca has been very fully treated by Mr. D. J. Scourfield.