OCR Text |
Show I -ytrv i Inventor of Portland Cement. Isaac Charles Johnson, the Inventor of Portland cement, Is still living In Qravesend, Eng., and active, at tho. age of 98. He was born In tho year 1810, when George III. was king and Jefferson was, president, and when Napoleon Na-poleon was at tho zenith of his power. Mr. Joh... jn won nn education under many difficulties, as his parents wore poor. In early manhood ho became an architect, and a houso which ho built In the Elizabethan stylo Is still1 standing at Swanscourt In Kent. It I was at this tlmo that he first Invented Portland cement, .which was first Introduced In-troduced Into this country by Levi P. Morton. |