For the drawing I am obliged to my friend William Jackfon Hooker, Efq. to 

 whom for many other valuable communications this work is alfo greatly 

 indebted. 



In drying it adheres to both Glafs and Paper. 



A. C. turned, natural fize. 



B. Ditto, magnified 4. 



C. Ditto, ditto 3. 



D. Ditto, ditto 1. 



