550 
The plates are a special feature of the work. 
The generous gift to the university by Mr. Hunny- 
bun of his series of pen-and-ink drawings of 
British flowering plants was, we believe, the 
immediate cause of its inception. A characteristic 
is that each drawing is made from an individual 
plant in the fresh state—no attempt has been 
made to give an abstract idea of the form, variety, 
or species figured. The drawings have been re- 
produced by photography and are remarkably 
clear, and sometimes very delicate representations 
of the whole or part of the plant; the details of 
floral structure are, however, often too small or 
incomplete. The wealth of illustration may be 
judged from the fact that the present volume con- 
tains no fewer than 206 plates. 
The work is to be completed in about ten 
volumes, which, so far as is practicable, will be 
issued annually; each volume may be had in two 
parts, text and plates respectively, or, at a some- 
what higher price, in one part, with the plates 
mounted on guards and interspersed with the 
text. Vol. i. has been set apart for conifers and 
ferns, and mosses, hepatics, and charas may also 
be included. AaB ake 
GEOGRAPHICAL GUIDES. 
(1) Junk’s Natur-Fiihrer. Die Riviera. By 
Alban Voigt. Pp. vi+466+vi plates. (Ber- 
lin: W. Junk, 1914.) Price 7 marks. 
(2) Einfiihrung.in die Erdbeben- und Vulkan- 
kunde Siiditaliens. By August Sieberg. Pp. 
vi+226. (Jena: Gustav Fischer, 1914.) Price 
4 marks. ° 
(3) Cambridge County Geographies. 
shire. By A. Morris. Pp. ix+166+2 maps. 
Northumberland. By S. Rennie Haselhurst. 
Pp. xi+181+2 maps. (Cambridge University 
Press, .1923.): Price. 1s.. 6d.. éach. 
Merioneth- 
(4) The Madras Presidency. With Mysore, 
Coorg, and the Associated States. By E. 
Thurston. Pp. xii+293. (Cambridge Univer- 
sity Press, 1913.) Price 3s. net. 
(1) HE first of Junk’s Natur-Fihrer, Dalla 
Torre’s volume devoted to Tirol,. was 
reviewed in this journal in December, 1913 (vol. 
xcil., p. 471). Alban Voigt’s treatment of the 
Riviera differs entirely from the method adopted 
by his predecessor. In Tirol we were given 
minute references to the objects of interest along 
roads and footpaths, so that the scientific traveller 
alighting at an inn might look round before dinner 
for rare birds or for the traces of historic earth- 
quakes. The guide-book to the Riviera is almost 
entirely devoted to a comprehensive review of the 
plant-life of the country, and the index contains 
NO: 2336; VOr- 303) 
NATURE 
[AucusT 6, 1914 
plant-names only. Due stress is laid (p. 284) on 
Sir Thomas Hanbury’s garden at La Mortola, a 
hamlet between Ventimiglia and Mentone, and 
135 pages are occupied with an account of the 
cultivated plants, though these are not native to 
La Mortola. The geology of the district is treated 
in fifteen pages, and twelve more are given to the 
famous prehistoric caves of Mentone. It is clear 
that the greater part of this “guide-book ”’ will be 
quite as useful in the library as in the field, 
and the description of the native flora in relation 
to its environment makes an appeal to every 
modern botanist. As examples of the author’s 
historical method, we may mention the disquisi- 
tion on Ferula nodiflora, the source, according to 
Martial, of scholastic “ferules” (p. 123), and the 
account of the recent immigration of Lepidium 
draba (p. 211), a steppe-plant that, like the Huns, 
has followed the Danube and then descended into 
Roman territory. The appearance of this book 
in Junk’s series may herald further surprises. 
Will the promised Swiss volume prove to be an 
authoritative work on mountain-structure ? 
(2) The visitor in Italy cannot fail to become 
interested in volcanoes, and A. Sieberg’s review 
of the volcanic and earth-shaken areas might well 
be translated into several languages. The author 
is on the staff of the seismological institute at 
Strassburg. He shows clearly how the volcanic 
zone is connected with the folded structure of 
Italy as a whole, and with the fractured and 
sunken basin that is now flooded by the Tyr- 
rhenian Sea. The review of the recent history 
of Vesuvius is exactly what the intelligent visitor 
requires, and the form of the mountain is shown 
to depend on a series of events going back to the 
building of Monte Somma, which is the “first 
phase” indicated by Johnston-Lavis. F. A. 
Perret’s beautiful photographs are used for many 
of the illustrations, and those of eruptions on Etna 
are especially welcome. The author’s own pic- 
tures are admirable, though he has, with unusual 
self-denial, converted some of them into diagrams. 
Personal observations, such as those on the poly- 
gonal soil formed by moving ash (p. 155), add to 
the interest throughout a very readable book. 
The A£olian Islands are effectively included; J. W. 
Judd’s papers, published in the Geological Maga- 
gine about 1876, should be mentioned in the 
useful bibliography. While accepting steam as a 
constituent of lava-flows, the author wisely re- 
frains from dogmatising as to the gases of 
paroxysmic outbursts. 
(3) The Cambridge County Geographies are 
continued with Merionethshire and Northumber- 
land. Their only defect is that no single author 
can deal equally with the geological basis, with 
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