an 
The same author, in his " Eucalyptographia," under fi. gtobitlus, gives a valuable 
bibliography on (inter alia) the cultivation of plants of the genus outside Australia. 
There" is a useful one in McClatchie, and the imperfect bibliography which follows 
increases these lists. 
Certain Eucalypts, being specially rapid-growing trees, have a certain value in 
assisting in the desiccation of areas in which they flourish. As nularia is the earliest 
and principal disease that planters of Eucalypts set about -to systematically combat, 
the following brief notes on it may be useful. 
Malaria is a febrile disease, formerly supposed to be due to poisonous exhalations 
from the soil, but now known to be due to the presence in the red blood corpuscles 
of animal parasites of the genus Plasmodium. Different species of Plasmodium (which 
are Protozoans) produce different types of the disease. 
Anopheles is a genus of mosquitoes which are secondary hosts of the malaria 
parasites, and whose bite is the usual, if not the only, means of infecting human beings 
with malaria. As mosquitoes pass their early stages in stagnant water, it is obvious 
how the drainage of swamps, such as the Roman Campagna, the covering of stagnant 
water with a film of kerosene, and the protection of human beings from the winged 
insects by means of mosquito-nets, have enabled sanitirians to render malaria-infected 
districts practically innocuous. An analogous case is the elimination of yellow fever 
in the Isthmus of Panama. 
NEW ZEALAND. 
No species of Eucalyptus is indigenous in the neighbouring Dominion. At the 
same time quite a number have become acclimatised, and no writer has done more 
to ascertain what these species are, and to give particulars of them, than the Uev. 
J. H. Simmonds, of Auckland. He has chosen the local official Journal of Apiculture 
for his papers, which are admirably illustrated, and his paper, '' Eucalyptus for Fencing 
Timber; Som? Suitable Species, and How to Grow Th3m " (Jouraal for April. 1916), 
may be taken as a type. 
FRANCE AND ALGIERS. 
The history of the introduction of Eucalyptus into France and Algiers, from 
the pan of Dr. Trabut, will be found under "Hybridisation," in a forthcoming Pait 
of my " Critical Revision of the Genus Eucalyptus." Here follow some references 
from the pens of other writers. Those of M. Planchon will usefully supplement 
M. Trabut's record. The literature of the introduction of Eucalyptus into Algiers and 
France, and its development, cannot with advantage be dissected and kept apart at 
this place. 
In Rwu? Horlicole, 1861, p. 205, in an article entitled " Plantations Hygieniques," 
M. Naudin attributes to Sir William Macarthur, of Camden Park, Menangle. New South 
Wales, t!i3 discovery of the anti-malarial character of Eucalyptus plantations. I ( n o 
not kno^v the direction Sir William's action took (I know he wrote in 1861 to Dccaisne), 
