56 INTRODUCTION TO ZOOLOGT. 



Miiller, long ago said that we need not resort to distant 

 regions and foreign climes for rare or wonderful creatures; — 

 that the fields, the woods, the streams, and the seas of our 

 native lands, abounded- in wondrous evidences of God's power 

 and wisdom. The investigation of om* native animals must 

 ever be a chief source of sound zoological knowledge ; for it is 

 there only we can watch, under favourable circumstances, for 

 the observation of their development, their habits, and their 

 characters. The naturalist whose acquaintance is confined to 

 preserved specimens in a cabinet, can form but a vague idea 

 of the glorious variety of nature, of the wisdom displayed in 

 the building up of the atoms of matter to be the houses of life 

 and intellect ; and, unless we study the creatures living around 

 ns, how can we gain that delightful knowledge? The passing 

 note of an animal observed during travel is an addition to 

 science not to be scorned ; the briefly characterizing of a new 

 species from a preserved specimen, if done with judgment, is 

 of importance ; but the real progress of natural history must 

 ever depend on tlie detailed examination of the beings gathered 

 around ns by the laws of geographical distribution, living and 

 multiplying in their destined homes and habitats." 



jIoTRS.— IR04. En'tozoa, pace 11. The Entozoa misht with pi-eat pro- 

 priety be v'acej amontr the nviiculated animals, as many of them exhibit in 

 theii-" structure more of the aviiciilated than of the radiate type. A very re- 

 markable fact with rrpard to their develtipment Uas been discovered— that some 

 which continue as cystnid worms in the bodies of certain ani ; als become 

 chanced into the hicrlier form of the Taenia or Tape-norm, if transferred to the 

 bodies of other animals. Vid. Siebold, translated from Ann. Sci. Nat, into 

 Annals Nat. Hist , Dec. \fr>2. Pa-e 431 



Zooi'iiTTES.paL'e 17. Medus.e. p. 33, connexion between them. 



Recent di.scoveries would po !ar to show that the separation of ihpse classes 

 "is unnatural, and that the Hyilroiil Zoophytes, at least, are very closely allied 

 to, if not beloufrins to, the same natural order with the Pulmo.L'rade Medusae." 

 *' in what li lit are we to rejrard the relationship between the .Medusa and the 

 Polype? The oneisnotthc larva of the other, as often improperly said. because 

 there is no metamorphosis of tht one iiit 1 the other. The first is ihe pnient o( 

 the last, and the la'^t of the first; but neither is a stac'e of an individual's 

 existence, destined to begin lile as u Medusa, and end it as a Polype, and 

 vice versa." 



"IN THE C.\SE OF AURELIA, &o. 

 a. Tlio nicihisa pntdiwrs opjrs. 

 h. 'J''u' epi'8 produce infusoria, 

 t. Tlic iiifiisiiria fix iitiil hecoine hydroid polypes. 



d. The hvrlrojil pnlvpps pr-nlnco tm-rliipTc bv freniinatton- 



"IN THE CA.SE OF CORYNE. &c 

 a. The zoopliytcs (iroihice incdusic by gemination. 

 h. Tlie mc(lu8.T; proilnoo ej?9. 



e. 'i'lic e« ,'9 prfHluce infusoria. 



J. 'flip iiif.ie-iriii flx and 1 ivn-.iie znnphyfcc" ProP'^or Edwnrd For'jcs, 

 Monosiaph of Ihc British isaked-cytd M';Jus.-e, publUlied by the Ray Society. 



