23 APRIL 1831, Page 20

The Arcana of Art and Science is the fourth volume

of a little- work of the most useful and entertaining description. It is brim- ful of all the new facts that have shown themselves above ground, in the course of the year. Every page is a volume, and many con- tain the results of whole years of ingenious labour and experiment. Every description of discovery, invention, experiment, receipt, ob- servation, or memorandum of a remarkable occurrence in nature or art during the year, is here recorded, briefly, but clearly. . It, in fact, is the very essence or extract of the scientific pursuits of the, whole world for one year. All this is to be had for five shillings.. We recommend it to be laid in every place where a man may pos- sibly lose five minutes for want of mental occupation.