COLONIAL FLORAS. 
497 
tively. So, also, is it among the Echinoderms where, besides, the 
proper ambulacra! apparatus so long known,there exists, according to 
our author, a quite distinct series of interambulacral vessels. In 
his next monograph, on the North American Echinoderms, Professor 
Agassiz promises to u give a full account of the structure and 
connections of this complicated system.” So long, however, as 
homology means similarity in relative position of parts, we must 
continue to deny the existence of any true homological correspondence 
between the canal-systems of the Acalephs and Echinoderms, for 
while those of the former freely communicate with, and indeed form 
portion of, the general body cavity, those of the latter are quite dis¬ 
tinct from it. Yet on the presumed existence of such an homology, 
Professor Agassiz rests his chief argument for abolishing the sub¬ 
kingdom Codenterata . 
XLIX.— Eloka Australiensis ; a Description of the Plants 
of the Australian Territory. By G. Bcntham, E.B.S., 
E.L.S., assisted by Eerd. Muller, M.D., E.B.S. and L.S. Go¬ 
vernment Botanist, Melbourne, Victoria. Vol. 1. Banunculacese 
to Anacardiacese. London: Lovell Beeve and Co. 
Elora Capensis : being- a Systematic description of the 
Plants of the Cape Colony, Caffraria and Port Natal. 
By W. H. Harvey, M.D., E.B.S., Prof, of Botany in the Univer¬ 
sity of Dublin, and O. W. Bonder, Ph. D. of Hamburgh. Vol. 1. 
Banunculacese to Connaraceae. Dublin: Elodges, Smith and 
Co. 
In the volume of this Beview for 1861, (p. 255,) there appeared a 
brief account of the measures adopted by the Director of the Koyal 
Gardens, Kew, to induce the Home and Colonial Governments to 
encourage the publication of inexpensive Eloras of the British Colo¬ 
nies. It is the object of the present article to inform our readers of 
the measure of success which has attended these efforts, of the pros¬ 
pects, such as they are, of so useful a project being fully carried out, 
and to review two of the most important volumes of the series which 
have hitherto appeared. 
West Indies .—The Elora first begun, was that of the British "West 
Indian Islands, for the authorship of which H. M. Secretary of State 
for the Colonies granted a sum of £300, and which was undertaken by 
one of the most accomplished Continental Botanists, Dr. Grisebach, 
Professor of Botany at Gottingen. Of this work five parts have ap¬ 
peared, and are offered for sale by Messrs. Beeve for 5s each ; an¬ 
other part, now in the press, will, we understand, complete the work, 
which will then contain descriptions of no less than 3000 tropical 
plants, at the cost of 30s. This is undoubtedly by far the most inex¬ 
pensive systematic botanical work ever published, and is a remarkable 
2 l 2 
