( 479 ) 



XXVII. Observations on the Structure of the Stomach of the 

 Peruvian Lama ; to which are prefixed Remarks on the 

 Analogical Reasoning of Anatomists, in the Determination 

 a priori of Unknown Species and Unknown Structures. 

 By ROBERT KNOX, M. D., F. R. S. Ed. and Lecturer on 

 Anatomy. 



(Read 4th January 1830.) 



SECTION I. 



THE facts and observations I have now the honour to bring be- 

 fore the Society, were fully made out, and their general correct- 

 ness ascertained, somewhat more than three years ago. Since 

 that time I have been in the habit of alluding to them, and de- 

 monstrating the strictly anatomical part, in my summer course of 

 lectures on comparative anatomy ; . so that, in short, they may be 

 considered as having, to a certain extent, undergone the ordeal 

 of public opinion. I have thought it right to mention this 

 circumstance, inasmuch as the statements and opinions to be 

 brought forward this evening are contradictory of others which 

 have been promulgated by some anatomists of high standing, and 

 have been received and admitted by naturalists, and by the non- 

 professional, as observations not to be doubted nor controverted ; 

 as matters of fact which call for no deeper inquiry ; as statements 

 on which unerring doctrinal points might be founded *. 



* There are exceptions to this remark. The elegant writer of the Zoological Ma- 

 gazine, whose taste and judgment in every thing affecting zoological inquiry are so 

 correct, did not give credence to the statements I have alluded to regarding the 

 structure of the lama's stomach. 



