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ate acute, and the surfaces parallel, the body is said to be 

 two-edged {anceps). 



Depressed (depressus), when the surface or centre of a body 

 is sunk : this, therefore, corresponds with the navel-form. 



Gibbous (gibbus), when a section of the body displays ele- 

 vations of its surface in particular parts. The simple swelling 

 up of a body is expressed by tumidus. 



When a section of the body displays angles, and we do not 

 pay any particular attention either to their number or regu- 

 larity, the body is said, generally, to be angular (angulatus). 

 When the angles are acute, and the surfaces flat, the part is 

 said to be three-sided (triqueter), four-sided (tetraqueter). 

 When the angles are obtuse, and the surfaces even, the part 

 is called three-edged (trigonus), four-edged (tetragonus), 

 five-edged {pentagonns), and so forth. When the sides are 

 sunk, we are accustomed, without regard to the acuteness or 

 obtuseness of the angles, to say, triangularis^ quadrangula- 

 ris, quinquangularis, and so on. 



Deltoid (delioideus), when a section of the body is three- 

 sided, and when the body itself is not much longer than 

 broad. 



Prismatic (prismaticus), when the body is somewhat long, 

 and, along with flat surfaces, has a considerable number of 

 angles. 



Spherical (globosus, globulosus, spharicus, spharoideus), 

 when the body approaches more or less to the shape of a 

 sphere. Hemispherical (hemisphesrictis), when the body has 

 the form of a divided sphere. 



An indefinite elevation is expressed by conveocus\ and the 

 opposite, the flat condition of a body, by planus, (44.) 



Pear-shaped {pyriformis), when the body has a thick, but 

 expanded summit, and tapers gradually towards the base. 

 To this is nearly related the turbinated shape (turbinatus). 

 In this case, the summit is commonly truncated, and the base 

 gradually tapers. This also is the form which is sometimes 

 called the reversed conical (pbconicus). 



Conical {conicus), on the contrary, is when the section of 

 the body is round, its apex tapering, and its base truncated. 



