VEGETABLE PHYSIOLOGY : ELEMENTARY ORGANS. 
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Oxylobium retusum and obovatum are two fine plants, afford¬ 
ing a pleasing variety among the other plants named, from their 
more robust habit and larger foliage. The flowers are papilio¬ 
naceous, of a bright orange and red: fibrous peat suits them 
best. 
Among these we have nearly every colour except blue, and 
this may be had in Kennedia monophylla , a lovely climbing 
plant, bearing copiously racemes of blue and white pea-shaped 
flowers. It delights in peat and loam, and should be trained 
upon a wire trellis. It requires but very little pruning. 
Lechenaultia formosa is a delicate low-growing plant, rather 
difficult in its management, but, when seen in good order, a most 
lovely object, being densely covered with small bright red 
flowers. It requires to be potted in fibrous peat with nearly an 
equal quantity of silver sand ; a few rough pebbles mixed in the 
soil will induce it to root more readily. An abundant supply of 
air and water should be given it during summer, reducing the 
quantity of each on the approach of winter. 
The above selection, with the assistance of a few Azaleas , 
Camellias , and Rhododendrons , would render a greenhouse all 
that could be desired for the first three months of the returning 
season, when they would be succeeded by the Pelargoniums 
and other summer flowering plants. 
P. 
Horticultural Essays, 
By the Members of the Regent''s Park Gardeners' Association. 
VEGETABLE PHYSIOLOGY: the Elementary Organs. 
By Mr. T. Moore. 
The vegetable kingdom cannot be distinguished from the animal 
kingdom by any absolute character: there is considerable ana¬ 
logy between the members of each, especially as regards their 
more important functions, and general principles of organisation ; 
but when viewed in detail, we find that in the higher orders of 
each kingdom there are important and distinct functions spe¬ 
cially allotted. Whilst between the more perfectly organised 
members of each kingdom, the analogy is found to be more per¬ 
fect, the points of distinction are likewise more apparent; 
and when we descend to the lower orders of each, it is difficult 
to discover any character by which the line of distinction is 
easily recognised. It has been thought by some, that the animal 
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