1885 .] 
Analyses op Books. 431 
Thallophytes since the importance of the part which they play in 
the economy of nature has come somewhat into notice. 
The chapter on “ Botanical Geography” naturally suggests the 
question how it is that the distribution of plants cannot, as it 
would seem, be brought into harmony with that of animals. If we 
take the system given by Mr. A. R. Wallace in his “ Geographical 
Distribution of Animals ” we find six grand regions, each sub- 
divided into provinces, or divisions of an inferior rank, making 
altogether 24 provinces. The differences between the regions 
are plainly of a higher importance than the distinctions between 
the provinces of any one region. 
In Griessbach’s geographical classification here adopted we have 
no regions, but merely 24 provinces of equal rank. The boun- 
daries, too, are far from coinciding. The neotropical region of 
Sclater and Wallace would include 7 provinces, not 4, as in ani- 
mal geography. Griessbach makes a “ region of Oceanic Islands,” 
in which New Zealand, Madagascar, Feejee, the Azores, &c., 
figure along with the Falklands and Kerguelen’s Land. 
Here the authors do not attempt to show any common feature 
which should warrant countries so distinct in their flora being 
classed together. The Australian region of Griessbach does not 
coincide with that of Wallace. The former confines it to 
Australia proper and Tasmania, while with the latter it includes 
also New Zealand, the Eastern Islands beyond “ Wallace’s line,” 
and the Pacific Islands. 
These discrepancies are very unsatisfactory. If we consider 
to what an extent the fauna of any country depends upon its 
flora, and how greatly both fauna and flora are influenced by the 
same factors, we shall feel that there is here urgent need for 
further investigation. 
From the point of view adopted by the authors, or rather we 
should say by Mr. Bennett, the work is excellent, and will render 
great service to that somewhat rare animal the true student, 
as well as to his mimic, the man who is preparing for an 
examination. 
The Mount Morgan Gold Deposits. By R. L. Jack, Geologist 
to the Queensland Government. 
The discovery of gold in and near Mount Morgan, in Queens- 
land, is of extraordinary interest, as the deposits are in an unusual 
formation. The author thinks that nothing but a thermal sprint 
in the open air could have deposited the material in question. 
The gold and the accompanying iron may have been dissolved 
out of the “ Mundic Reef,” the gold possibly by chlorine produced 
