ZOOLOGY. 541 



wanting in all lower animals. A noseless animal is an 

 inferior or Tegumental animal. 



3286. The sexes are separate, because they are Air- 

 breathing animals and perfectly symmetrical in form. 

 The ovi- and seminal ducts are likewise symmetric and 

 in pairs. The ovipositors and penes are perfect, as in the 

 Snails, because they can be shoved forwards, but not 

 everted as in the latter. 



3287. The position of the sexual parts at the posterior 

 extremity of the body has been permanently established, 

 with exceedingly few exceptions, as in some aquatic In- 

 sects. 



That they correspond to the head, or are imperfect 

 cephalic organs, is most distinctly shown in the Insect. 

 They are usually environed by valves, pincers, and fila- 

 ments, which resemble maxillae and palpi. 



3:288. The Ovum-animals multiply by division, by 

 granules or gemmae, i. e. shoots, the Sexual animals by 

 membranous ova, the Arthritic animals by horny ova. 

 These last, or egg-shells, are hard, and frequently also 

 so strung together or laid by the parent upon each other 

 as to represent the annulate body of some Insect. 



3289. In the ova of the Dermatozoa or Tegumental 

 animals the vitellus only appears to exist, being without 

 albumen, which first seems to make its appearance along 

 with the animal systems. As the animal separates into 

 higher and lower substances, so also does the ovum or 

 microzoon. The simplicity of the Tegumental animals 

 has been prophesied or foretold in that of their ova. 



The Insecta, as being the third class of their circle, 

 repeat the Acalephse and Kracken. With the last they 

 bear much resemblance in form and in their motor 

 organs. 



3290. Would we arrange the Worms along with the 

 spiral vessels or ducts, the Crabs with the woody rings 

 in the stem, we must term the Tracheal animals foliage 

 or leaves. Their wings are pinnate leaves, and among 

 the Orthoptera many occur which, as well in the form of 

 the body as of the wings, appear as if they had been just 



