REMARKS UPON METAMORPHOSIS. 981 
ticular theory; but rather endeavouring to fix the 
attention upon circumstances which must enter into 
all theories. In every attempt to discover the 
natural system, be that system what it may, these 
matters cannot and must not be overlooked, if our 
desire is to discover and explain those general laws 
of nature by which all these diversities and re- 
semblances can be reconciled and accounted for. 
