230 Manis Crassicaudata. [No. 123. 



Hindoos ascribe great virtues to the scales of these animals in the 

 cure of Hcemorrhoides, but how they are applied 1 know not. 



The subject of these notes I had the honor to present to the Society's 

 Museum on my arrival in Calcutta. And a few days ago while visiting 

 the Museum, had an opportunity of seeing the skin of a specimen 

 agreeing apparently with the animal described to me by Captain 

 Hannyngton. In this skin, there is a slight variety or modification of 

 form in the shape of the lateral scales of the tail, sufficient perhaps, 

 (if established by an examination of two or three more specimens,) to 

 constitute a new species. Mr. Blyth, the Curator, who brought this 

 fact to my notice, will have, it is to be hoped, the opportunity of being 

 able by and bye to examine more specimens of the kind, and thus 

 establish a new species, or reject a mere accidental variety. The one 

 I have been describing, I see no reason to suppose other than the Manis 

 Pentadactyla, or Crassicaudata of authors. 



Calcutta, April 16, 1842. 



On the Theory of Angular Geometry. By S. G.Tollemache 

 Heatly, Esq. 



The following paper is intended to examine the properties of angular 

 magnitude in a light, which has not hitherto attracted sufficient attention. 



It is usual among elementary writers, to express the fundamental idea 

 of an angle by the phrase — " mutual inclination of its containing lines. " 

 These are the words of Laplace in his Lecons at the Ecole Normale, and 

 are in substance those of the great majority of Geometers before and 

 after him. When, nevertheless, we have to eliminate any property rela- 

 tive to angles, it is well known that this definition becomes a dead 

 letter ; and it is found necessary to superadd an explanation which em- 

 bodies as much more of the fundamental idea, as enables lis to compare 

 angles together. It amounts usually to saying, that angles are compared 

 with each other by comparing the openings at their vertices : and that 

 the magnitude of an angle depends on the width, and not on the longi- 

 tudinal extension of that opening, if it may be permitted so to use the 

 words in italics. 



