54 TRANSACTIONS OF THE 
ideas could be disseminated. Other scientific organizations 
founded for the advancement of pure and applied science 
were now opening branches devoted to the encourage- 
ment of the biological sciences in all of which entomol- 
ogy, sooner or later, was represented. Finally, at the 
close of the eighteenth century a new development of 
entomological science, economic entomology, arose to 
fill the needs of the young American nation. It now 
seems quite certain that economic entomology had 
sporadic encouragement in Germany in reducing forest 
pests before this time, and in another sense had a history 
dating from ancient accounts of the silk-worm and the 
honeybee industries. Still for its widest scope and fullest 
growth it is typically an American science. 
This brings us in historical sequence down to the 
beginning of the nineteenth century. In this period so 
many remarkable changes occurred in every branch of 
the science that it must rest for the present. Intensive 
specialization within the science; subordination of many 
of the problems, once held as fundamental, to new 
concepts; and, lastly, the rapid strides in agricultural 
and medical entomology are in brief, perhaps, the 
principal ideas to be traced through the century still to 
be treated. 
