Catalogued
Chemograph
- Made by
- Hydrochemistry practice; no single originator
- Year
- 1900s
- Field
- Earth science and hydrology
- Kind
- Data display
- Room
- Change over time — Placed by reading its description, not yet studied
31 other forms share this skeleton
Source
Hem, USGS Water-Supply Paper 2254
Attribution less certain: contested, or no single inventor recorded