Volume 1

A familiar introduction to crystallography; including an explanation of the principle and use of the goniometer / With an appendix, containing the mathematical relations of crystals; rules for drawing their figures; and an alphabetical arrangement of minerals, their synonymes, and primary forms. Illustrated by nearly 400 engravings on wood. By Henry James Brooke.

  • Brooke, Henry James, 1771-1857.
Date:
1823
Catalogue details

Licence: Public Domain Mark

Credit: A familiar introduction to crystallography; including an explanation of the principle and use of the goniometer / With an appendix, containing the mathematical relations of crystals; rules for drawing their figures; and an alphabetical arrangement of minerals, their synonymes, and primary forms. Illustrated by nearly 400 engravings on wood. By Henry James Brooke. Source: Wellcome Collection.

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    most of their forms by separate names, he has pre- sented those forms to the mind rather as indepen- dent individuals, than as parts of such groups as should render their relations to each other, and hence their mineralogical relations, apparent. — I have been enibeal therefore, to attempt such an arrangement of the various forms of crystals, as will indicate their constant relations to, or differences from, each other, for the purpose of more readily re- ferring from the crystal to the mineral; and this are rangement is contained in the Tables of Modifications which will be found in the following pages.* : The best illustration of the manner in which some of the forms of crystals may be conceived to be allied to others, is afforded by the Abbé Haiiy’: S theory. of decrement. That theory appears, however, ‘much encumbered by his adoption of two kinds of molecules, and by the forms which he has assigned to particular molécules of one of those kinds; in consequence of | this, I have ventured to propose a new theory, in re- ference to several of the classes of primary forms, which may in some respects be regarded as more simple, and which forms. the subject of the section on molecules. + * aed these tables were constructed I have peat Fran Mr. Konig of the British Museum, that he had for some time entertained an inten- tion of framing a set of tables nearly on the same’principle: and he has shewn mea considerable number of drawings of the figures of crystals: which were made partly with a view to this object, yet serving at the same time as records of many of the crystalline forms of minerals con- tained i in that rich collection, upon which his attention is SO constantly and so assiduously bestowed. fiyti iis + The theory of spherical molecules which has been entertained by some distinguished philosophers, has not been alluded to in this treatise, as the laws of decrement appeared more readily explicable on the sup- position of the molecules of crystals being solids contained within Pee surfaces. :