4GO PLINY'S NATCIIAL IIISTOHY. [Book 



transparent surface, has leaves of ivy running all over it. Nar- 

 ci.ssitis* 3 is distinguished by veins on the surface, and has a smell 

 like that of the narcissus. Cyamias 51 is a black stone, but 

 when broken, produces a bean to all appearance. Pyren 5 * is 

 so called from its resemblance to an olive-stone : in some cases 

 it would appear to contain the back-bone 58 of a fish. rhceni- 

 citis 57 resembles a palm-date in form. Chalnzias 58 resembles a 

 hailstone, both in form and colour : it is as hard as adamant, 

 so much so, indeed, that in the lire even it re'.ains its coolness, 

 it is said. Pyritis, 49 though a black stone, burns the lingers 

 \vhen rubbed by them. 1'olyzonos 60 is a black stone traversed 

 by numerous zones of white. 



Astrapcea 61 has rays like flashes of lightning, running across 

 the middle on a ground of white or blue. In phlogitis, 82 there 

 is, to all appearance, a flame burning within, but not reaching 

 the surface of the stone. In anthracitis, 63 there are some- 

 times sparks, to all appearance, flying to and fro. Enhygros 64 

 is always perfectly round, smooth, and white ; but when it is 

 shaken a liquid is heard to move within, just like the yolk 

 within an egg. Polythrix 65 presents the appearance of hair 

 upon a green surface ; but it causes the hair to fall off, it is 

 said. Leontios and pardalios 6 * are names given to stones, from 

 their resemblance to the skin of the lion and panther. Droso- 

 lithos 67 has received its name from its colour. Melichrus is a 

 Loney-coloured stone, of which there arc several varieties. 



M " Daffodil stone." An Eastern compound, probebly. 



** " Bean stone." 



45 " Our Jew stone," probably ; identical with Die Phccnicitis of Chapter 

 66 and the Tecolithos of Chapter 68. L6 See Note 13 to Chapter 66. 



* 7 See Chapter 66. 



5 * See B. xxxvi. c. 43. Pebbles of white flint were probably meant 

 under this name; from which is derived, according to Ajasson, the French 

 word tailtou, meaning a flint pebble. 



59 " Fire stone." Not a Pyrites of modern Mineralogy, probably. 



"With many zones." Probably an agate or j:uper. 



61 "Lightning stone." t2 " Flame stone." 



w "Burning coal stone." See B. xxxvi. c. 38, and Chapter 27 of this 

 Book. 



M "Containing liquid." Identified by Desfontaincs with the Gcodes 

 enhydros of modern Geology, which sometimes contains a liquid substance. 



a " "Many-haired stone." 



w As to these clones, agates or jaspers probably, see " Nebritis," in 

 Chapter 64, and the Note. 



<* " Dew stone." The reading here is very doubtful. See Chapter 61. 



