304 C H A P T E R 50. 
In the year 1752, Mr. Watson kid 
before the Royal Society two rare Englijh 
plants ; the Lathrcea Squamaria, and the 
Dentaria bulbifera : the latter unnoticed 
both by Mr. Ray and Dillenius. Thefe 
were difcovered by Mr. Blacks tone^ 
near Harejield [m). 
He alfb defcribes, in this volume, that 
fingular vegetable production, noticed be* 
fore under the article of Thomas Knovv^l- 
TON, as firft difcovered by him, and called 
Moor Balls y the Conferva Mgagropila of 
LlNN^US [ll), 
Mr. Watson, about this time, was the 
firft, as I apprehend, who communicated to 
the Englijlj reader, an Account of a Re-> 
volution which was about to take place 
among the learned, in Botany and Zoolo- 
gy, refpedting the removal of a large body 
of marine produdions, w^hich had hereto- 
fore been ranked am.ong vegetables ; but 
which were now proved to be of animal 
origin, and ftand under the name of Zoo- 
phytes, in the prefent Syjlem of Nature. It 
{m) Phil Tranf, VoL xlvii. p. 42vS. 
(»} lb. p. 498. 
may 
