It is a pleasing task to us to have to notice so many works as guides to the use of the microscope. Although these are not all of equal merit, they clearly indicate that there is a demand for instruction, and that the value of this instrument, as a means of observation, is making sure and certain progress. We are glad also to find, in the literature of microscopy, a tendency to seek a wide field of demand, by placing a low price on the works issued. We do not see why our intelligent artizans should not have the field of their vision increased and the pleasures of their life multiplied by the use of this instrument, as well as those who possess more of this world’s goods than themselves. On this account we can strongly recommend Mr. Hogg’s volume. It is not only well got up with a large...

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