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560 NUMERIC RELATIONS OF THE VERTEBRATE SYSTEM. 
as the seed-leaves of flowering plants produce prolific ‘* ovules,” 
new radial organs are developed from the preceding ones —later- 
ally at alternate heights and toward the wider spaces. 
This igo. referred to the radial organs of plants in an early 
stage, will yie 
1. The saoiri of parts in question, successively. 
2. The peculiar law of interpolations or of ‘‘ divergence,” viz. : 
by a number of interstices represented by the second preceding 
one of each cyclar number. 
3. It will conclude the cycles, if it be supposed that the activity 
of each junior member depends on that of its progenital one; as 
in all cases of simple branch developments. 
These numbers occur in like manner in the human frame, as 
follows : 
Inclusive of the terminal (ossified or gristly) coccygeal element, 
we have exactly thirty-four spinal vertebre. 
Classifying nerves by their work, or “function,” we find-—— 
3 pairs of cervical nerves (neck). 
5 pairs of bracchial nerves (arms). 
8 pairs of pedal nerves, composed of 3 crural (lumbar) and 5 
ischiadic (sacral) ones. 
pairs of nerves to the rump. 
5 specific ones of the cranium. 5 
34 in all; whereas the number of the spinal vertebræ, which in- 
close the spinal cord is exactly 21.. 
There are five pairs of “ extremities,” organised after a com- 
mon plan: (1) the lower, (2) the upper, (3) the temporal, (bear- 
ing the lower jaw for a ‘‘member,”) (4) the palate-facial, with the 
upper jaw for its “member,” (5) the opercular or hyo-tympanic 
one, forming the gill-lid in fishes or the tympanic ossicles in man}; 
and the digital extremity of which is gradually converted into the 
(hand-like) crimped (external and internal) cartilages of the ear. 
e five pair of hemal arches of the cranium, 7. e., the gill 
arches of fishes, are gradually transformed into the gristles of the 
gullet, etc. 
The main variation consists in the varying, but “ cyclar” num- 
ber of ‘‘rays,” —fingers, etc. ; the varying cyclar number of their 
joints (1, 2, 5, 8, 13 i in a dolphin, with five carpals, 
instead of eight, as in man) and the varying cyclar number of 
