THE two new sections of Dr. Friend's “Inorganic Chemistry” deal with (i) hydrogen, the alkali metals, the ammonium-compounds, and the coinage-group of metals, and (2) oxygen, jvater, and hydrogen ...

THERE are not wanting signs that the study of botany is steadily increasing in this country. An immense number of text-books or manuals have been published in English during the last thirty years on ...