nd livestock, has large bottling works,
and manufactures iron, brick and tile, machine-shop products, woollen
goods, shirts, cigars and flour. The place was platted in 1846, was
called Chaldea until 1849, when the present name was adopted, was
incorporated as a town in 1855, and in 1870 was chartered as a city of
the second class. The city limits were extended in 1906-1907.

CENTIPEDE, the characteristic member of the group Chilopoda, a class of
the Arthropoda, formerly associated with the Diplopoda (Millipedes), the
Pauropoda and the Symphyla, to constitute the now abandoned group
Myriapoda. The resemblance between the Chilopoda and the Diplopoda is
principally superficial and due to the elongation and vermiform shape of
the body, which in both is composed of a number of similar or subsimilar
somites not differentiated as are those of Insecta, existing Arachnida
and most Crustacea, into series or "tagmata" of varying function. Until
1893 no one doubted the correctness of the assumption that the Chilopoda
and Diplopoda were orders of a class Myriapoda of the same systematic
status as the Arachnida or Hexapoda. But in that year, R.I. Pocock and
J.S. Kingsley independently pointed out that they differ as much from
each other as either differs from the Hexapoda; and should, therefore,
rank as distinct classes of Arthropods. Pocock, indeed, definitely
associated the Chilopoda with the Hexapoda in a group, the
Opisthogoneata (Opisthogonea), equivalent to a group, the Progoneata
(Prosogonea), comprising the Diplopoda, Pauropoda and Symphyla. As the
basis for this classification was taken the position of the generative
orifices which open in the Opisthogonea at the posterior end and in the
Prosogonea near the anterior end of the body. As a matter of fact, in
the Chilopoda they are situated on the penultimate or pretelsonic
somite; in the Hexapoda upon the antepenultimate somite (male) or a
little farther forward (female). Moreover, the recent researches of
Heymons into the embryology of _Scolopendra_, one of the Chilopods, has
shown a close correspondence in the number of cephalic metameres between
the Chilopoda and Hexapoda, a correspondence which has not yet been
established in the case of the Diplopoda or Symphyla. This last
discovery bears out the view of relationship between the centipedes and
insects, to the exclusion of the Diplopoda, Symphyla and Pauropoda. But
even if in the future it can be shown that all these