so conscientiously and evidently con amove ; the subject exercising 1 an extra- 
ordinary fascination upon all who take it up. 
adopted home of Algeria, we will only mention one fact. In 1876 there were 
no less than 119 species growing in the experimental plantations of El- Alia 
belonging to one chemist alone, M. Cordes. This, probably the largest 
collection in the world, is due entirely to private enterprise, and too much 
praise cannot be accorded to such services rendered to science in the teeth of all 
kinds of difficulties and disadvantages. All who have made themselves 
familiar with French colonization in Algeria must admire the public spirit 
displayed within the last twenty years on behalf of the reboisemenb or re- 
planting of the country, a measure so necessary alike on sanitary and 
economic grounds. Already the effects of this movement are being felt in 
many districts, and M. Certeux points out other benefits likely to accrue 
from the young eucalyptus forests. 
Take the prevalence of ophthalmia in treeless countries, for instance. We all 
know that the glitter and blaze of the Egyptian or Algerian atmosphere 
account for the painful maladies of the eyes and blindness so common in these 
countries. Plant the fast-growing, umbrageous eucalyptus trees, and the 
causes of the evil would disappear. Again, we have here many novel and 
interesting facts for the bee-keeper. The eucalyptus, in consequence of its 
abundant flowers, attracts the bees, and wherever it has been planted the 
bee has followed it ; the species best adapted for apiculture being the E. 
globulus , E. gig ant ea, E. odorata , E. roseata, E. amygdaMna , and E. siderostylus. 
Many valuable preparations have already been added to the pharmacopoeia 
by the essential oils, bark, and leaves of this tree, and there can be no doubt 
that others await discovery. M. Certeux’s manual will prove equally useiul 
to the scientific student therefore, since he gives not only a list of the dif- 
ferent medicines and medicaments, but an analysis of each. He also gives 
extracts from the treatises of M. Cloez and other analytical chemists who 
have made the eucalyptus an especial study. On the whole, this is a little 
work botanists, agriculturists, and the lovers of natural science generally 
will do well to consult, and it has the advantage of containing a vast amount 
of information in a small compass. 
/ ITII Prof. Ramsey’s “Physical Geography and Geology of Great Britain,” 
Mr. Horace Woodward’s “ Geology of England and Wales ” and Prof. 
Hull’s “ Physical Geology and Geography of Ireland,” it might be thought that 
the ordinary reader had an abundant supply of information upon the structure 
of these islands, but an examination of Mr. G. H. Kinahan’s “ Manual of 
the Geology of Ireland ” will show that upon this part of the kingdom at 
any rate there was still a good deal to be said. Mr. Kinahan in his treat- 
* “ Manual of the Geology of Ireland.” By G. Henry Kinahan. 8vo. 
London : C. Kegan Paul & Co., 1878. 
To show how much attention has been given to the eucalyptus in its 
THE GEOLOGY OF IRELAND.* 
