cism, nor one where the facts, to use the mildest term, were put together so loosely, while from them such astounding deductions were sought to be drawn. The scientific knowledge of the author is, evidently, altogether acquired from books, and not from original or even well-verified experiments; and some of these are of a most questionable class, as to the amount of scientific reliance that could be fairly placed to the credit of their authority. It even evinces but a small acquaintance with the works on the principles of electro-chemical science, of which, by the way, the  author makes much use. In short, its learning is reading merely, and precisely of that kind that a diligent and previously accomplished mind might readily acquire from the library, and not that  which can be derived only, from observation, on the broad field of nature, or by varied experiment in the closet. These were our impressions