A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c9.s4.31

v1.c9.s4.31

| SUSRUTA | RASES, QUOTING SANASRAD |
| The variety of leeches called *Krishnā* is black in colour and have thick heads, *Karvurās* have their bodies, like that of eels with elevated stripes across their abdomen. *Alagardhās* have hairs on their bodies, large sides and black mouths, *Indrāyudhās* have longitudinal lines along their back, of the colour of the rainbow. | Of the leeches one is poisonous, which is intensely black like antimony having a large head : and scales like certain fishes and having the middle green : also another upon which are hairs, has a large head and different colour like the rain-bow : |