( 203 ) 
CHAP. l6. 
Account of Ray continued— -Makes experiments cn 
the motion of the /^^—Cataiogus Fiantarum 
Anglias — tour in England — Deceafe of his 
friend Mr. Willughby— ^//^ of Bp. Wiikins— 
Nomenclator Clafficus — His marriage — His 
Obfervations topographical and moral, i^c. 
made in his foreign travels : with the Catalogus 
Stirpium Exoticarum, annexed, 
RAY. 
ABOUT this time Dr. Tonge, Dr. 
Beal, and fome other philofophical 
gentlemen, in England, were buiied in ex- 
periments relating to the motion of the fap 
in trees. Among thefe alfo, in the fpring 
of 1669, Mr. Ray and Mr. ¥/iLLUGHBy 
entered upon a fet of the like experiments, 
and induced Mr . (afterwards Dr.) L i s t e r , to 
profecute the fame. Thefe experiments were 
made on the birch, the fycamore or greater 
maple, the alder, the alh, the hafel, chefnut, 
walnut, and willow ^ of which the two firft 
were 
