A popular treatise on gems, in reference to their scientific value; a guide for the teacher of natural sciences, the jeweller, and amateur: together with a description of the elements of mineralogy, and all ornamental and architectural materials .. (1859)
Feuchtwanger, Lewis. [from old catalog] · New York, D. Appleton & company · leaf 45
Fig. 31. Fig. 32. kind is shown in fig. 31, where ABBBX is the first, andACCCX the second kind of pyramid. In like manner fromthe prism 00P, the ditetragonal prisms ccVn are derived,and finally when 71 = cc^ the tetragonal prism of the sec-ond kind, whose sign is 00Poo . The combinations of the…
Precious stones · Building stones · Mineralogy
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![An illustration from Divina proportione : opera a tutti glingegni perspicaci e curiosi necessaria oue ciascun studioso di philosophia: prospettiua pictura sculptura: architectura: musica: e altre mathematice: suavissima: sotile: e admirabile doctrina consequira: e delecterassi: co[n] varie questione de secretissima scientia (1509)](https://img.insideoutlibrary.com/img/200/ia-divinaproportion00paci-114-304.webp)
