The metals, for the eyes, poison and Prameha · Sushruta's thirty-seven ganas
| System | Sushruta's thirty-seven ganas |
| Source | Sushruta Samhita, Sutrasthana 38 (Dravyasangrahaniya) |
| Dravya | 7 |
| Name | Identity |
|---|---|
| Trapu | Vanga |
| Sisa | Naga |
| Tamra | Copper |
| Rajata | Silver |
| Krishnalauha | not yet written up in this library |
| Suvarna | not yet written up in this library |
| Lohamala | not yet written up in this library |
3 of these 7 names are not yet written up in Laisha's dravya library. The group is printed whole either way, because a gana with members quietly left out is not the gana.