BISHOP'S STORTFORD SUB-FOSSIL HORSE SKELETON. 283 it was photographed by Mr. H. G. Featberby, who, with his engineering resources, found no difficulty in erecting a temporary scaffold some 10 feet above it, from which he secured the excellent photograph which was reproduced in the Illustrated London News of 5th June 1909 ; (5) that all reference to the Hipparion was gratuitous, since the idea was merely suggested before the limb-bones were uncovered ; (6) that I was perfectly aware that Pliocene beds had not been recognised by the Survey in this part of the country, though it was impossible for any one, with an acquaintance with the London Clay and the Reading Beds such as I have gained from between 30 and 40 years of field-work in them, to recognise the deposit in which the horse had been inhumed as belonging to either of those formations, which (as I was well aware) had been long recognised in the well-section at the town pumping station, only 350 yards distant, and of which I will only say that doubts still linger in my mind as to the true geological horizon of at least one sub- formation included in that section, there being no fossil evidence to hand. The skeleton was left lying at the bottom of the pond for several weeks, during which it was infamously damaged, although fortunately not until after Mr. Featherby had secured his excellent photograph, which has thus acquired a permanent value. On further examination of the hill-slope, and of the evident erosive action of a powerful high-level spring which must have been flowing from the drift-cap of the hill ever since glacial times, one was soon led to the conclusion that the pond excavation had not touched the London Clay behind the remanie material which the land-slides of the hill had brought down from higher levels, with mammalian bones, human artefacts, and a variety of stones from the drift-cap of the hill above, some of them undoubtedly "erratics." This conclusion was arrived at after the day's labour which was given to the removal of the entire skeleton, the bones of which were as black as those recovered this year from the bottom of the peaty alluvium of the Stort Valley. It was soon seen that the deposit in which the skeleton was found (utterly devoid of all trace of anything that could be associated with a modern horse) falls into line with the post-glacial "rubble-drift" series of deposits, which Prestwich, with his characteristic thoroughness,