THE ORCHIDS. 343 
the outside—between these and such as had no bark, but 
made the new wood in the midst of the pith, and so grew 
on the inside. Again, the outside-growers, like the oak and 
the pea, always have leaves with little veins forming an 
irregular net-work all through them; but the inside-growers, 
as the corn and the lilies, have the veins’ of their leaves 
running straight from one end to the other, and not netted 
at all, so ‘that we can split such a leaf into strips very 
easily, and this makes a palm-leaf hat a possibility, which 
otherwise could not be. By this discovery Jussieu divided 
the vegetable kingdom quite as clearly and effectually as 
Alexander of Parma did the Dutch Republic, and without 
Violating the rule of nature at all, wherein he had a great 
advantage over the other. 
We speak of this natural difference in plants, because in 
talking over these royal families we have come to the point 
When we must step over this remarkable line. Most flower- 
ing plants are outside-growers (botanists say “Exogens,” and 
the reader may too, if he chooses; it means just the same 
thing), and they all have their leaves netted with veins and 
seeds separable into two halves. But the Orchids, of which 
We now speak, are inside-growers (or “Endogens”), have 
leaves that may be stripped into ribbons, and grow from 
woda as indivisible as a buck-shot. Hence, there is no need 
to mistake this family for either of the preceding,* not even 
ma single case; but as we have set out to indicate a few 
Plain marks for the ready recognition of each order, it 
remains to state ‘them for that under present notice. 
ra examine an apple-blossom we find there are 
and S or petals in it, and all of them are just alike in form 
Size. This makes what is called a regular flower. The 
gg matters nothing; the lily has six petals, the spider- 
bas three, the willow-herb four, and the enchanter’s night- 
ia d E and yet all are perfectly regular, for their pore 
e are the same all the way round the flower- Any 
five 
Diei : 
ds and Pisids, of which we haye spoken in Vol. I. of the NATURALIST. 
