( 4 ) 
but confidently afiirmed to others, tkat 
the whole bufinefs would be an Inquiry 
and Work but of a very fmall time. But 
when thereupon I am more attentively 
fearching into particular Places and Bo¬ 
dies, there arife continually fo many 
doubts clofe following one another,that 
I often finds my fclf brought back again 
as *cwere to the beginning of my Courfe, 
when 1 thought 1 was very ncer the end 
thereof. I may refemble thofc doubts 
to the Lernean Hjdras Heads, bccaufe I 
had no fooner difpatched one, but innu¬ 
merable others grevv up in their place : 
At leaft I found my fclf wandering in a 
Labyrinth, where, the neercr you are to 
the out-let,themore windings you findc 
your felf engaged in. 
But 1 fliall not ftay to excufe this tar- 
dinefs of mine, eonfidering it is fo well 
known to your Highnefs, how difficult 
experimental Difquifitions are. But that 
I, after I have overcome a great part of 
the newly intimated labour, when I 
fhould attempt fome thing in Jnatemj, 
do now defire leave to return into my 
Country, this indeed would need an A- 
pologyj if I did not know, that your 
