Saptaparna.

Visάlatvak.

Vern. Chhatin, Beng. Chhatian, Hind,

The bark of Alstonia scholaris is very thick and spongy, hence tho tree has recieved the names of Visάlatvak, Vrihattvak, etc. It is described as tonic, alterative and useful in fever and skin diseases. Susruta gives the following formula for use in catarrhal fever. Take of the bark of Alstonia scholaris, gulancha, nim bark and the bark of Betula Bhojpattra, equal parts, in all two tolas and prepare a decoction in the usual way.1 It enters into the composition of several formulae for skin diseases. The following is an illustration.

Amritdshtaha pachana. Take of the bark of Alstonia scholaris, gulancha, leaves of Justicia Adhatoda (vάsaka) and Trichosanthes dioica (patola), tubers of Cyperus rotundus (mustaka), Calamus Rotang (vetra), catechu and nim leaves, and prepare a decoction in the usual way.