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Northren News. 
(iii) C. venustus Zadd., Beast Cliff. (iv) Rhabdophaga nervorum 
Kieff., Ravenscar, Robin Hood’s Bay and Hardhurst Moor. (v) 
R. salicis Schrank, Ravenscar. 
Salix aurita Linn. : — (i) P. pedunculi Hartig., Beast Cliff, (ii) Crypto- 
campus sciliceti Fall., near Flask Inn. (iii) Rhabdophaga nervorum 
Kieff., Beast Cliff. (iv) R. salicis Schrank, near Flask Inn and 
Cowgate Slack. 
5 . cinerea Linn.: — (i) P. pedunculi Hartig., Falcon Inn, Ravenscar, 
Beast Cliff, Jugger Howe Dale, Staintondale Moor, and Hardhurst 
Moor. (ii) P. salicis Christ, Jugger Howe Dale. (iii) Crypto- 
campus venustus Zadd., near Falcon Inn, near Red House, Cross 
Cliff, Jugger Howe Dale, Stainton Dale Moor, Hardhurst Moor, 
and Cowgate Slack. (iv) C. ater Jurine, Ravenscar. (v) C . 
saliceti Fall., near Falcon Inn, cliffs, Ravenscar and Robin Hood’s 
Bay, Stoupe Brow Moor, Stainton Dale Moor and Cowgate Slack, 
(vi) Rhabdophaga salicis Schrank, near Falcon Inn, Ravenscar, 
Stoupe Brow Moor, and Jugger Howe Dale. (vii) R. nervorum 
Kieff., frequently noted between Beast Cliff, Jugger Howe Beck 
and Evan Howe. (viii) R. heterobia H. Low, Jugger Howe Dale, 
(ix) Eriophyes tetanothrix Nal., near Falcon Inn, Beast Cliff, 
Iburn Dale, Jugger Howe Dale, Stainton Dale Moor and Hardhurst 
Moor. 
5 . repens Linn. : — (i) Pontania salicis Christ., Harwood Dale Moor, near 
Mitten Hill, Hawsker and Biller Howe Dale, (ii) Rhabdophaga 
salicis Schrank, Harwood Dale and Biller Howe Dale. (iii) R . 
rosariella Kieff., with the last species. (iv) Eriophyes tetanothrix 
Nal., Harwood Dale, and near Mitten Hill. 
Populus nigra Linn. : — Taphrina aurea Fries., Oliver’s Mount and Holbeck 
Gardens, Scarborough. 
Picea excelsa Link. : — Chermes abietis Kalt. Near Soulsgrave Slack. 
J uncus sp. : — Livia juncorum Latr. Five large galls seen, Jugger Howe 
Beck near Wragby Wood. 
Agropyron repens Beauv. : — Isosoma graminicola Giraud. Along the 
coast, Cornelian Bay to Robin Hood’s Bay. 
Pteris aquilina Linn. : — -(i) Perrisia filicina Kieff., Dalby Warren and 
most areas on the moors or cliffs where the host plant grows, (ii) 
Anthomyia signata Brischke, Hayburn Wyke, Beast Cliff and 
Iburn Dale. (iii) Eriophyes pteridis Moll., Beast Cliff, Iburn 
Dale and Jugger Howe Beck near Wragby Wood. 
Bulletin No. 5 of the Bureau of Bio -Technology contains some well- 
illustrated notes, including ‘ A Rapid Method for the Estimation of 
Acetaldehyde,’ by N. K. Smitt ; ‘ A Book of Yeasts,’ by F. A. Mason ; 
‘ The Isolation of Bacteria from Beer Deposits, ’ by P. Hampshire ; ‘Trogo- 
derma khapra ’ ; ' A Note on Soil Sterilisation for Tomatoes,’ by T. Parker, 
A. W. Long and J. S. Mitchell ; ‘ Red Spider : a Note on its Control,' 
by Theodore Parker, as well as interesting Notes and Comments. 
The Annual Meeting of the Darlington and Teesdale Naturalists' 
Field Club was held recently. The Hon. Treasurer (R. H. Sargent) 
presented the balance-sheet, showing a balance in hand of £16 18s. 3d. 
The Hon. Secretary (J. E. Nowers), in his annual report, showed that 
the club had had the most successful season for some years. Thfe eight 
Saturday excursions were all successfully carried out, with an average 
attendance of 22. A considerable amount of botanical and geological 
work was done. Many interesting and instructive papers were read and 
discussed. Numbers of specimens have been added to the club’s collec- 
tions. The total membership is now 118. The retiring President, Mr. 
C. P. Nicholson, proposed Mr. Walter Hodgson as President for the 
ensuing year, and the latter took the chair. 
Naturalist 
