VOL. III.] PHILOSOPHICAL TRANSACTIONS. 281 



Pliny and Quintilian have made upon the most celebrated pieces of the ancient 

 painters ; paralleled with some works of the most famous modern painters, 

 Leonardo da Vinci, Raphael Urbino, Julio Romano, and N. Poussin. 



Those principles of art constantly observed by the ancients in their works, are 

 here enumerated to be five : 1 . Invention or the history. 2. Proportion or 

 symmetry. 3. Colour (wherein is also contained the just dispensation of the 

 Hghts and shades). 4. Motion, in which are expressed the actions and passions. 

 5. The regular position of the figures of the whole work : of which the inven- 

 tion and expression are more spiritual and refined ; the proportion, colouring, 

 and perspective, the more mechanical part of this art. 



III. Stereometrical Propositions, variously applicable, but particularly in- 

 tended for Gauging, by Robert Anderson.* Printed in small 8vo. l668. 



This little work is an elaborate treatise on the measurement of all kinds of 

 solids that can be generated by the rotations of circles and the conic sections, 

 or the ellipse, parabola and hyperbola; namely, all spheres, spheroids, conoids, 

 and spindles, &c. with their segments, zones, ungulas, &c. 



IV. Elaphographia sive Cervi Descriptio Physico-Medico-Chymica, Auth. 

 Joh. Andrea Graba, Med. Doct. Jenae, 8vo. 



In this small tract are delivered, from the best writers on this subject, and the 

 author's own practice and observations, the nature, qualities, and uses of the 

 stag. In it is particularly considered the longevity of this animal,-}- and its cause 

 conjectured at, viz. the plenty of a balsamic preservative salt, with which it is 

 said nature has stored this above many other animals : Then the successive 

 growth and annual casting off of its horns, together with the causes thereof; 

 but the author chiefly and largely insists on the uses of the several parts 

 of a stag, which he finds to be very many, and of divers kinds, viz. ornamental, 

 mechanical, culinary, and medicinal. He thinks all the parts of this animal, even 

 the excrementitious parts, are endued with medical virtues; but it is to the 

 volatile salt and spirit extracted from the horns and blood that he assigns the 

 principal uses in physic; commending them as penetrating, opening, attenuating, 

 abstersive and discussing. 



* Mr. Robert Anderson was an ingenious mathematician, who was much noticed and encouraged 

 in his studies by the mathematical Mr. John Collins, so often mentioned in the labours of the Royal 

 Society, Mr. Anderson was not in the profession of mathematics, or other branches which he culti- 

 vated and improved, but was a silk-weaver by trade, and must have been a person of some con- 

 sideration and substance, as he was able to make, at his own charge, some thousands of experiments 

 with cannon, for improving the art of gunnery; which he did in a considerable degree; as appears by 

 the treatises on that art which he published, as deduced from those experiments ; viz. The genuine 

 Use and Effects of the Gun, in l674; To hit a Mark, in 1690; and. To cut the Rigging, &c. in 1691. 



-j- The asserted longevity of this animal ii a mere fable. 



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