38 
The South Australian Naturalist, 
OUR EXCHANGES. 
‘'The Australian Naturalist’'’ (N.S.W.)? (3ctober, 1924. 
“The Victorian Naturalist,” December and January numbers. 
“The Queensland Naturalist,” November number. 
“Journal of the Arnold Arboretum,” Harvard, U.S.A. This 
number deals with the trees of China. 
“Forestry Bulletins,” issued by the Forest Department, 
Western Australia. The Department has been kind enough to 
forward its Bulletins, Nos. 1 to 34. Each Bulletin deals with 
some aspect of forestry in Western Australia. Number 5, “A Dis- 
cussion of Australian Forestry.” In this, the late D. E, Hutchins, 
one of the most gifted and most experienced forestry experts who 
ever visited our shores, deals in most experienced, illuminat- 
ing and interesting fashion with the problems of forestry in our 
different States. No. 34, “Key to the Eucalypts of Western Aus- 
tralia,” by S. L, Kcssell, B.Sc.. Conservator of Forests and C.A, 
Gardner, is of special interest to students of botany. The set of 
Bulletins is a credit to the Department of Forestry in Western 
Australia. 
“The S.A. Ornithologist,” October, 1924. 
Annual Report of the State Forest Administration in South 
Australia, 1923-24, by E. Julius, Conservator of Forests. This 
report gives the area of Forest Reserves as 206,109 acres, of 
which 28,217 acres are enclosed for planting. It seems a pity 
that the number of acres actually under forest is not given. 
THE MUSEUM. 
Members should make a point of visiting the Museum to 
see several new groups that have been recently installed by the 
Director and staff. One ol these contains a large number of in- 
sects arranged in such a manner as to arouse interest in the minds 
of visitors. The principle of contrast is made great use of; for 
instance, one case, entitled “Giants and Drvarfs,” shows the great 
differences in size that exist betv/een insects of the same natural 
order; another, entitled “Males and Females,” shows the great 
differences between the sexes of Insects of the same order. A 
third shows a series of specimens arranged to illustrate the de- 
velopment of the foetus in the Kangaroo, three of the specimens 
having been removed from the uterus, or womb. This exhibit 
should settle once and for all the much debated question about 
marsupial birth. 
