Zoology. 431 
III. ZOOLOGY. 
Synopsis of a Cares of Lectures given at the Museum of Natural 
Histon, (Paris), in 1850; by M. Istpore Georrroy Satnt-Hatre.* 
[The following sy raopels, although by no means new, will be read with 
interest at the present time in connection with the recent anpag ea: on 
the or a. of species, especially as it is not generally pile to Am 
can students. ] 
ON SPE 
I. On the Animal Series, and ye ‘Parallel Classification. 
1.) ee various zoological types may be reduced to a serial or pro- 
tle ord 
as was vrnatp said before the time of Lamarck in the grea 
perfection or complication of organ sei ei in its diversi sification, 
specialization and centralization, which a the maximum at one ex- 
tremity of the series, at the minimum at hie other. 
Thus, at the top, the beings whose x7 See organs, and tissues are 
the most diversified, whose functions are the most specialized, whose or- 
ganism is the most Palrieettocy at the bottom, We bein whose compo- 
sition is the most homogeneous, in whom the aie: are the most com- 
pletely ielebapaator and the life, in some sort diffu 
(3.) In the animal series, sometimes the terms mated each other at 
very close sintaevile, ccasionally even, without sensible interval; some- 
times two consecutive series remain at a aoa ner from each other. 
The series is then neither regular nor continuous. 
(4.) Neither is it simple. Often, and even ae usually, it is double, 
triple, or more complex still, successions of terms manifest tly analogous 
being found in two or several gr ya eared distinct. These succes- 
in different groups, a we have n 
5.) Hence arise double relations hom it is iesportantt to know and to 
e Great attention has alwa n paid to the affinities which 
ent groups, is not less necessary to the rational conception of the seri 
and to the expression of their wage connections. 
6.) This expression, it has seemed to us, can be given by the ne 
system of classification, known as “the parallellic classification, or classifi 
Cation by parallel series, which is on ee a but a very simple im- 
have a indicated, that i 3 to say, of which the secondary types a 
homolo. ogous to the srsbstioke We shall call ther, to to pont th at shite 
the continued difference and the homology, a, 6, c 
_ Suppose a third group ~ giving similarly ey 4 e. A fourth N, 
Giving A, B, C, D, E, and so 
ed sil for this Journal by a lady. 
