In the year of his death, 1650, Shelton published yet another shorthand system called "Zeiglographia", but it did not become as widespread as his "Tachygraphy".
Samma år som han dog, 1650, publicerade Shelton ytterligare ett stenografisystem kallat "Zeiglographia", men det fick inte lika stor spridning som hans "Tachygraphy".