176 THE ESSEX FIELD CLUB. Exhibits.—Mr. Miller Christy, F.L.S., exhibited some specimens of; the Fresh-water Mussel, Unio pictorum, from the lake in Riffham's Park, Danbury (August 1909). He said that U, pictorum was normally bright green in colour. The present specimens were much larger than usual and darker in colour. This peculiar type of the mollusc was met with also in lakes in some other parts of Essex, and might perhaps be occasioned by an abundance of food. Mr. Christy also showed a specimen of the Great Crested Grebe (Podiceps cristatus) from Heybridge, presented to the Club's Museum by Dr. E. Bertram Smith, of Stisted. The bird was probably a young male in winter plumage, the crest not being so pronounced as it would be in summer. Until recently, the bird was not known to breed in Essex ; but, within the last 10 or 15 years, it has become more numerous, and latterly it has bred on the lakes in Weald Hall Park and Gosfield Park. Mr. Christy added that those members who were present at the meeting at the Walthamstow Reservoirs on 26th June last (ante, p. 105) would remember seeing one of these Grebes sitting on her nest in the "island" of the lake. The Crested Grebe would no doubt become commoner owing to the protection afforded by the Wild Bird Protection Act. "Fossil Horse" at Bishop's Stortford.—Mr. E. T. Newton, F.R.S., exhibited an engraving from the Illustrated London News, of 5th June 1909, of the skeleton of the so-called "Fossil Horse" found at Bishop's Stortford, and read an extended memorandum on the subject, together with a comparison of the three types of horses of the present day living in Europe and Asia. He had come to the conclusion that this skeleton presented no characters which would indicate its being of Pre-historic age : on the contrary, its agreement with the bones of modern horses points to a much more recent origin (see ante, pp. 132-136). Mr. Dalton, F.G.S., made some remarks on the subject, and pointed out that, inasmuch as the whole skeleton had been preserved in situ, it was improbable it was naturally deposited. Mr. Alexander J. Hogg referred to an abnormal horse which he had seen, many years ago, at Ingatestone (see post, p. 191). A vote of thanks was passed to Mr. Newton for his communication. Boring-tools for Making Wooden Water-Pipes.—Mr. W. Cole exhibited a set of the Boring-Tools formerly used for making Wooden Pipes for the conveyance of water from the works to the consumer. These tools had been purchased by the kind aid of Mr. Fell Christy, of Chelmsford. It was stated that the irons had been in the possession of one family for three or four genera- tions and came from near Burnham-on-Crouch. Mr. Cole showed a lantern-slide copied from Evelyn's Sylva (reproduced in the Essex Naturalist, vol. xiii., page 135). demonstrating the mode of employing the tools in the making of the pipes ; but, in this picture, a water mill was shown driving the borer ; whereas the implements exhibited must have been revolved by hand labour. The tools would be placed in the Forest Museum, alongside the fine example of a Wooden Water-pipe presented some time ago by our member, Mr. J. M. Wood, C.E. (see engraving of it in E.N. xiii., p. 65). Forest Lopping Axe.—Mr. Ernest Linder, B.Sc., sent for exhibition and presentation to the Forest Museum the original Axe used by the Willingales of Loughton in asserting the rights of Lopping on the. Forest on the 11th of November in each year (see Fisher's Epping Forest, p. 247). A vote of thanks was passed to Mr. Linder for his interesting gift.