As showing how few the higher groups are in number, and how widely they are spread throughout the world, the fact is striking that the discovery of Australia has not added an insect belonging to a new class, and that in the vegetable kingdom, as I learn from Dr. Hooker, it has added only two or three families of small size.
Australiako kasua dugu talde handion kopurua zein mugatua den eta mundu osoan zehar zein zabal hedaturik dauden frogatzeko egitate nabarmen, Australia aurkitzeak ez baitu gehitu klase berriren bateko intsektu bat bera ere; eta landarediari dagokionean, Hooker doktorearegandik jakin dudanez, hedadura gutxiko bizpahiru familia besterik ez.