On the Phcenomena of the Horizontal Moon, 65 



Fig. 3. is an upper tooth, from Siberia, of a middle-aged 

 felephant : this is No. MXXII. of Dauhenton. 



Fig. 4. is one of the second teeth of the yovmg elephant. 

 It comes from the vicinity of Toulouse. 



Fig. 5. a lower tooth of an old elephant, only half worn. 



This general resemblance has induced Pallas, and almost 

 all subsequent writers, to think that the fossil elephant is 

 the same witli that of Asia. 



But is this resemblance complete? I denied it on an- 

 other occasion {Mem. de I'Instit. Classe de Math, et Pkys. 

 torn. ii. p. 19). Since then, however, I have hesitated a 

 little in maintaining an assertion which might appear con- 

 jectural, and as to which the observations of my learned 

 friend M. Adrian Camper had inspired me with some 

 doubts*. Let us again examine the matter impartially. 



In the first place, it is certain that the number of the la- 

 minae, considered by itself, cannot, as I thought, yield any 

 good characters, since it is subject to vary according to the 

 age of the individual and the place in which his tooth is 

 situated, from four up to four- and- twenty. 



But is the number always the same in teeth of equal 

 length ? This is what I have examined in a great number 

 of teeth both of Indian and fossil elephants, and 1 have al- 

 most always found the lamince of the latter thinner, and 

 consequently more numerous, in the same space. 



[To be continued.] 



XI. On the Phcenomena of the Horizontal Moon. By 

 Ez. Walker, Esq. 



To Mr. Tilhch. 



N looking over Young's Lectures on Natural Philosophy, 

 lately published, T found in the second volume, p. 313, that 

 the doctor has taken notice of my paper on the phosnomenoa 

 of the horizontal moon, published in the ninth volume of 

 the Philosophical Journal, and has marked it as " cither 



• Descrip. Anat. d'un Elcph., in fol. p. 19. 



Vol. 29. No. 113. Oct. 1807. E erroneous 



