144 NOTES AND NEWS. 
shingle’ and the construction of groins, I can offer my individual 
opinion only, but I do it the more readily as it may call forth some 
expression of support or the contrary. 
As a rule gravel on all coasts is always travelling, and never 
remains long in a place unless stopped artificially. Hence groins 
are most useful, but they must be continuous, and not too far apart. 
If groins cease, the shore to the south of them (on the coast of 
Holderness) suffers more than ever, because the ordinary supply of 
gravel is cut off. The artificial abstraction of gravel is scarcely 
worth naming. A single on-shore gale will remove as much in a day 
as all the carts in six months. The main difficulty is to prevent the 
destruction of the boulder clay cliffs from the percolation of rain- 
water and from frost. Unless this can be done the groins will find 
themselves some day out at sea. 
Erratum.—It has been pointed out to me by Mr. G. Silabon, 
of Hull, that in my last report I imply that Polson himself measured 
the distance of certain churches in Holderness from the edge of the 
cliff. This is partly an error of punctuation. The passage referred 
to (‘ Naturalist,’ p. 104, 1892) should read, ‘Polson, when writing 
his valuable history of Holderness, recorded the distance of certain 
churches from the edge of the cliff in 1786. It is to be presumed 
that the measurements were made, etc.’ 
NOTES AND NEWS. 
Mes: Reeve & Co. have in preparatio ew work on the Paseo h 
Acileate Hymenoptera, from the pen of Mr. awaad clades s, F.L.S., uniform 
ork on the Hemiptera Heteroptera, fost complet tee 
The energetic Berwick algologist , Mr. E. A. L. Batters, B-A., LL.B., F.L.S., 
pg in the A are of Botany’ for June 1892 a paper entitled ‘* Additional Notes 
mn the Mari ne Algz of the Clyde Sea-area,’ extending to eight pages 
pag ok ie notices of numerous species. 
coe 
Mr. J. Cosmo Melvill, seas wore activity and aoe ees are by 
© means confined to any single nch of natural hist a paper on 
? 
h , has 
in the August "1892 ‘Je ournal of etaaiy,, giving stations for 
very numerous forms of this difficult g 
ae 
‘Annotated List of gripe Tachinidz,’ another of the useful papers on 
Dipter which have occupied the attention of Mr. R. H. Fit i of Bradfo = has 
—— fin nished, the last Hislaiivent t (published i in the ‘ Entomologist’s Monthly 
Mice: ” for October a) including (at p. 262) a rc Riso pa sb able of 
the ae pine gener 
Aceon or ie Session Me -92. he v es evidence of a oe oa 
rk, and contains abstracts of several Mhable and interesting g Pape ers. A new 
feature, a oe a a be ajgeagan by the members, is the List of Books 
library, given on pp. 73 a: snd 74: so is a singularly 
Ther 
beantifal frontispiece in the shape of a plhoroprenite reprint of a Sigi//aria pa 
recently in a Ganister quarry at Meanwood, near Leeds. 
pee 
