206 
REVIEWS-REPORTS OF SOCIETIES. 
Photo-micrography. By A. C. Malley, B.A., F.R.M.S. Second edition. 
Sm. 8vo., 166 pp., 3 plates, 28 woodcuts. Price 7/6. Published by 
H. K. Lewis, Gower Street, London. 
This very useful book is the only one published—in England at all 
events—upon the subject, and the fact that it has so soon reached a 
second edition proves its usefulness. It includes a description of the 
apparatus required, suitable methods of mounting, the wet collodion 
and gelatine dry-plate processes, with an account—well illustrated—of 
the arrangement of the apparatus for photo-micrography, and a disser¬ 
tation on the faults most commonly met with, and tlieir remedies. 
The plates include photo-micrographs of various diatoms—enlarged 
from 1,000 to 1,500 diameters—physiological slides, butterfly scales, Ac. 
Altogether the book is a suggestive and a useful one, and we commend 
it to the rapidly increasing class of our readers who have taken up the 
study of photography. 
Leafing of Oak and Ash. —-During the month of May last the 
foliation of many hundreds of these trees was observed in Bedfordshire 
and Hertfordshire. It was not till the third week that the oak trees 
were well expanded, and the ashes as a whole were several days later. 
Some of the latter were not in full leaf till quite the end of the 
month. There were a few instances, possibly five per cent., in which 
the ash trees, in similar circumstances with oak trees, were equally 
advanced with them. These were, probably, especialty vigorous trees. 
This is now the sixth consecutive season in which the leafing of these 
trees has been relatively the same. J. Saunders. 
BIRMINGHAM NATURAL HISTORY AND MICROSCOPICAL 
SOCIETY.— Geological Section, May 26th.—Mr. Beale, of Rowley 
Regis, exhibited various specimens from calciferous sandstone, carbon¬ 
iferous limestone, Yoredale rock, coal measures (low 7 er) not local; 
coal measures, local. Plants: mollusca, crustaceans, and icthyolites of 
unknown or little-known species. Also, spotted coal. Mr. A. H. Atkins, 
Silurian specimens from Purlieu Lane, Malvern, which in the space 
of less than a mile shows sections of all the Upper Silurian Beds. 
Fossils: Pentamerus oblongus, Stricklandinia lirata, Ortliis Innata, 
EhynchoneUa nucula , Lingula Lewisii, Avicula Danbergii , and Phacops 
caudatus. —June 2nd.—Mr. T. Bolton exhibited young lampreys just 
hatched from the eggs ; also Notommata brachionus from King's Norton. 
Mr. W. B. Grove, B.A., then read an interesting paper on “ A 
Botanical Tour on a Laburnum Leaf,” which he illustrated by coloured 
diagrams and mounted sections under the microscopes. He also 
exhibited the microscopic plants themselves, viz. : Leptosplueria Lucina 
(new to Great Britain) ; also Glceosporium cytisi, Phyllosticta cytisi, 
Alternaria brassicoc, Cladosporium fascicularc , Epicoccuin neglectum, 
and Fusarium roseum, all on laburnum leaves from Bradnock’s Marsh, 
Hampton-in-Arden. The paper also offered evidence in favour of the 
modern tendency to found the species of parasitic Fungi on a narrow 
biological basis, even where no difference of form existed.-— Biological 
Section, June 9th.—Mr. Charles Pumplirey exhibited a beautiful 
selection of Swiss alpine plants, cultivated in his garden from roots 
gathered in Switzerland; Mr. T. Bolton, F-R.M.S., a gelatinous ring 
of green ova, probably of a water beetle, and Leptodora hyalina ; Mr. 
W. B. Grove, B.A., Fungi, Agaricus sphagnorum, A. elections (rare), 
