NOTES : ORIGINAL AND SELECTED. 
327 
tained from a small area on his land an interesting series of Neolithic imple¬ 
ments. These include two polished celts, two unpolished adzes, several 
finely-worked scrapers, and a large number of flakes and implements 
of a rougher type. The site of these was visited by the Essex Field Club 
in 1912, at which date it was in a derelict state. It is situated on the high¬ 
est part of the Essex upland, on a stiff boulder clay soil, which must have 
been covered with forest in Neolithic times. The discovery of flint imple¬ 
ments on such a site is unusual and is of extreme interest.— George 
Morris, B.Sc. 
Eastbury Elouse, Barking. —It is with much satisfaction that 
we learn, from the Report of the National Trust for 1920-21, issued last 
July, that the entire cost of purchase and renovation of this fine old Eliza¬ 
bethan manor house has now been defrayed. The building has been 
put into a habitable condition, and it is intended to utilize it as club prem¬ 
ises for the ex-Service men of Barking.— Ed. 
Ecological Studies on Paludestrina ulvce and P. ventrosa in Essex. 
—Mr. G. C. Robson contributes an interesting article to the Annals 
and Magazine of Natural History 2 on his researches on the distribution of 
two species of common brackish-water gastropods in tidal ditches to the 
west of Leigh-on-Sea. 
Some of these ditches receive frequent supplies of sea-water, whilst 
others are more or less cut off ; the consequence being a considerable 
variation in the salinity of the water in various ditches. Investigation 
showed that P. ventrosa is more adaptable than P. ulvce. It was at first 
thought that the degree of salinity might be the chief factor in determining 
the distribution of P. ulvce ; it was found, however, that this species was 
practically confined to ditches containing the alga, Ulva lactuca, which 
in this district appears to be the favourite food-plant of this gastropod, 
stragglers only being found on Enteromorpha and Schlerochroa. In other 
districts P. ulvce has been found plentifully on Enteromorpha and Zostera, 
but the former plant does not apparently appeal to the palate of Essex 
examples although it occurs plentifully in the Leigh ditches.— Henry 
Whitehead, B.Sc. 
Roller at Ramsey. —A specimen of the Roller ( Coracias garrulus L.) 
was captured alive in an exhausted condition after having “ telegraphed ” 
itself at Ramsey, near Harwich, on 17 June, 1921 ; a second example 
is reported to have been seen at the same time. 
The captured bird was brought to our Member, Mr. W. B. Nichols, 
of Bradfield, Manningtree, but soon succumbed; and Mr. Nichols has very 
kindly had the specimen set up and has presented it to the Club’s Museum 
at Stratford. 
This is believed to be only the second authenticated record of the 
occurrence of this rare straggler in our County. Miller Christy, in his 
“ Birds of Essex” (p. 150) refers to an example, shot at Great Chesterford 
in 1865, and now in the Saffron Walden Museum, as being the only county 
record known to him. — Percy Thompson. 
2 Observations on the Succession of the Gastropods, Paludestrina ulvce and ventrosa, in 
Brackish Water.” Ann. and Mag. Nat. Hist., Series 9, vol. vi. (1920), pp. 525-529- 
