476 Dr. Falconer on Cuvier^s Laws of Correlation, 



extent, that tliese variations alone cannot be taken to mark 

 distinct species. 



Most of these conclusions are fully supported by Prof. Tem- 

 minck, from an examination of the very extensive series of spe- 

 cimens in the Leyden Museum, though, from not possessing 

 specimens of the smaller male, he was unable to detect any spe- 

 cific difference in the females. 



Prof. Owen, in his admirable papers published in the ' Trans- 

 actions of the Zoological Society,^ has described the apparent 

 confusion in the position of the second set of teeth in the jaws 

 of the young animal, and observes that it seems wonderful that 

 they should all fall into their proper places in the adult, without 

 those irregularities which are so frequent in i\lau. My spe- 

 cimens however prove that such iiTegularities are very frequent, 

 as more than one-half of my crania exhibit them in a greater or 

 less degree. In two cases a sixth molar tooth occurs on one or 

 both sides of the jaw ; the incisors are often unsymmetrical and 

 the whole jaw is frequently oblique, in one case so much so, that 

 while the upper canine closes inside the lower on one side of the 

 jaw, it is outside on the other. 



A striking peculiai-ity, not, I believe, hitherto noticed, exists in 

 the raammse of the female, which are scarcely perceptible even 

 when giving suck. In two specimens which I shot with their 

 infant young, the nipples rose from a breast not more developed 

 than in the male animal. 



The preceding observations might have been very much ex- 

 tended, but the object has been merely to give some account of 

 the writer's observations and collections, believing that no defi- 

 nite and certain conclusions can be arrived at without a compa- 

 rison of his materials with those which already exist in England 

 and at Leyden, a comparison which he looks forward to making 

 on his return. 



Sarawak, Dec. 1855. 



XLVI. — On Prof. Huxley^s attempted Refutation of Cuvier's 

 Laws of Correlation, in the Reconstruction of extinct Verte- 

 brate Forms. By H. Falconer, M.D., F.R.S. &c. 



The printed Proceedings of the Royal Institution contain a full 

 abstract of the principal part of an evening lecture, delivered by 

 Prof. Huxley, on the 15th February last, " On Natural History, 

 as Knowledge, Discipline, and Power," authenticated with his 

 initials, and thus leaving no doubts as to the authorship. It 

 contains some statements which are so remarkable, — emanating 



