H. W. Lawson
1903 Journal of the American Chemical Society  
47s was, therefore, the vegetable extract froni the straw which improved the Egyptian bricks, rather than the fibre of the straw. Mr. Acheson has found that a large class of vegetable extracts have a similar effect, and has termed his treatment "Egyptianized Clay."
doi:10.1021/ja02012a027 fatcat:mz45xxkltjacta3ji4cge7hr5m