the Nursery of Mr. Samuel Brookes, of Ball’s Pond. The 
leaves were more acute than they have been hitherto 
represented. Thri ves in a mixture of fresh loam and sand, 
and is to be increased, we presume, either by offsets 
or seeds. 
To the ample description given by Professor Hooker 
we find nothing to add. 
A vacant page gives us an opportunity of continuing 
the remarks upon the venation of leaves which formed part 
of the subject of our last number, and which have since 
excited some degree of interest among Botanists. Upon 
that occasion, the attention of the public was called chiefly 
to a proposed new method of naming the veins of leaves, 
so as to enable the observer to express, with greater 
precision than heretofore, the real nature of the differences 
which are to be found in venation. Whether any advan¬ 
tage is likely to accrue to Botany from the use of such 
terms, or whether they are the best which could be 
contrived for the purpose, it is for others to judge. The 
immediate object of the remarks now about to be made, 
will be to shew how far our opinion of the importance 
of systematic distinctions drawn from foliage is confirmed 
by the authority of previous writers. 
To begin with one of the highest authorities of this 
age, we shall first cite the learned M. Decandolle, who, in 
the first edition of his Theorie elementaire dc la Botafiique, 
describes fourteen modes of venation, to which he attaches 
as many distinctive names; to these another is added in 
the second edition of the same work. They have been 
subsequently applied by him to characterise the vegetation 
of those natural orders of plants which have been under 
his consideration during the progress of his Systema. 
M. Achille Richard adopts the terminology invented by 
Decandolle for leaves with particular forms of venation, 
and observes that they are of the very first importance, and 
may even serve to characterise certain divisions of plants; 
which he exemplifies by noticing the peculiar venation 
of Monocotyledones, with the exception of Aroideee. 
Professor Link defines several kinds of venation, and 
