Aid to Teachers and Students in Natural Philosophy: Being the "Key" To Dr. Johnson's Philosophical Charts; Accompanied With Facsimiles of the Charts on a Reduced Scale (Classic Reprint) - Tapa blanda

Excerpt from Aid to Teachers and Students in Natural Philosophy: Being the "Key" To Dr. Johnson's Philosophical Charts; Accompanied With Facsimiles of the Charts on a Reduced Scale

The charts are especially designed to supply the wants of our common or district schools, in the absence of the apparatus, which they have come greatly to need, but are generally unable to purchase. In many parts of the country, the majority of dis. Trict schools are no longer common schools, mere ly where is taught only spelling, reading, and writ ing, together with the primary branches, arithmetic, geography, and grammar; but they have come to be academies, where, at least, so much of the natural sciences are taught as is contained in the ordinary school manuals on Natural Philosophy; thus creating a general and ever increasing necessity for a work of this kind, as a cheap and adequate substitute for the philosophical apparatus.

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