ZOOLOGY. 509 



Annulate animals are therefore multiplied Malacozoa ; 

 Mucus-animals of the third power Ovum*. 



The respiratory organs, being in their lowest condition, 

 will not as yet be freed from the tegument ; the vessels 

 simply form a network or projecting filaments and la- 

 mellae reticular branchite ; as in the Worms. The ten- 

 tacular organs, from l^eing yet soft and thus scarcely move- 

 able, are still very imperfect. Upon the lowest stage the 

 tegument or skin simply feels ; in the next place pa- 

 pillae, and finally filaments, originate, especially about the 

 mouth Cutaneous, Papillary and Filamentary animals. 



3132. If the tegument, as being the original branchial 

 membrane, is converted into horn; then the branchiae 

 cannot continue as retia, but must elongate above the 

 tegument into filaments, ramules or lamellae. 



With this, these elongated branchiae separate into two 

 organs, one part of them becoming indurated in like 

 manner with the general tegument, and supporting the 

 other as gill. Horny branchial filaments, which contain 

 vessels, nerves, and fibres, are called feet Pedal animals. 



3133. The limbs or members of these animals are 

 simply hollow tegument, hollow hair, and are therefore 

 thoroughly different from the bones or the animal system. 



The tegument thus hardens around the soft parts and 

 the viscera. A horny coat of mail originates, and thus 

 we have horny or mailed animals, in opposition to the 

 Malaco- or Conchozoa. 



3134. Beneath the horn, however, there must still be 

 soft skin, and this becomes fibrous by the strong oxyda- 

 tion which it undergoes. Fibrous fascicles are attached 

 to the coat of mail and to the hollow limbs, and are 

 consequently within the tubes. 



3135. These fibrous bundles are not flesh, but a fibre- 

 drawn tegument, so that there are also no true muscles. 

 They must on that account too be numberless. 



3136. The articulations or joints are external not 

 internal ; they thus consist of tegumental tubes, not of 

 bones, abutting against each other, and are not sur- 

 rounded by flesh. Hence,- like all the preceding groups 



