S2S HENRY SOTHERAtf & CO., 140, STRAND, W.C., AND 37, PICCADILLY, W. 



6407 BOYLE (Hon. Robert ; F.R.S. ; founder of the Boyle Lectures) The AERIAL NOCTILUCA ; or 

 some NEW PHENOMENA, and a Process of a Factitious Self-shining Substance, in a Letter to a 

 Friend, living in the Country, first edition, 12mo. very large copy in contemporary sheep (one 

 joint cracked) ; RARE, 126' Qd Tho. Snowden, 1680 



6408 ANOTHER COPY; also: NEW EXPERIMENTS; and OBSERVATIONS, made upon the ICY 



NOCTILUCA, with a CHYMICAL PARADOX, first edition, 2 vols. 12mo. in I, old calf, 1. Is 1680-168 



6409 - A LARGE PAPER COPY OF BOTH WORKS, 2 vols. large 12mo. in 1, calf antique (top of first 

 title margined, otherwise a VERY SOUND COPY), 1. 5s 



1 From a bare hint as to the method of preparing PHOSPHORUS (discovered by Brandt in 1660) he arrived at it inde- 

 pendently, and communicated it 14 Oct. IttSO in a sealed packet to the Royal Society. In a tract [b^th the above] he 

 accurately described the qualities of the new substance, under the title of ' Icy NoctilucaV D. N. B. In the ' Chemical 

 Paradox' the author tries to prove, from an experimental basis, ' that chymical principles [i.e. elements] are transmutable, 

 so that out of one of them, others may be produced.' 



6HO - DISQUISITION about the FINAL CAUSES of NATURAL THINGS, wherein it is Inquir'd, 

 Whether, And (if at all) With what Cautions, a Naturalist should admit them ? with Appendix of 

 some Uncommon Observations about VITIATED SIGHT, first edition, sm. 8vo. contemporary calf; 

 or, old calf, newly rebacked (rare], 8s John Taylor, 1688 



6411 - ESSAYS of the STRANGE SUBTILTY, DETERMINATE NATURE, and GREAT EFFICACY of 

 EFFLUVIUMS ; with New Experiments to make Fire and Flame ponderable : together with a 

 DISCOVERY of the PERVIOUSNESS of GLASS, first edition, sm. 8vo. contemporary calf (RARE), 

 1. Is M, Pitt, 1673 



In this important work, containing the author's atomic theory, he confirms the fact, first discovered by Jean Hey, that 

 metals actually increase iu weight after being calcined the one sore point that did not agree with the phlogiston theory, 

 and was explained away with a vast amount of ingenuity by its adherents. 



6412 [ ] The EXCELLENCY of THEOLOGY, COMPAR'D with NATURAL PHILOSOPHY (as both are 



Objects of Men's Study), discoursed of in a Letter to a Friend, by T. H. R. B. E., Fellow of the 

 Royal Society, with some Occasional Thoughts about the EXCELLENCY and GROUNDS of the 

 MECHANICAL HYPOTHESIS, first edition, 12mo. contemporary calf, 8s Qd H. Herrlngman, 1674 



6413 ANOTHER COPY, seivn, Is 



6414 EXPERIMENTA & OBSERVATIONES PHYSICS : wherein are briefly treated of Several Sub- 

 jects relating to NATURAL PHILOSOPHY in an EXPERIMENTAL WAY, w'ith a small COLLECTION 

 of STRANGE REPORTS, first edition, sm. 8vo. large copy in contemporary sheep (VERY RARE), 

 l.5s John Taylor, 1691 



THE LAST WORK published by the author, and including ' Chymico-Magnetical Experiments and Observations'. The 

 ' .Strange Reports' consist of remarkably strange stories, illustrating the amazing credulity remarkable in a man of so true 

 a scientific tempsr. 



6415 EXPERIMENTS and CONSIDERATIONS touching COLOURS, first occasionally Written, among 



some other Essays, to a Friend ; and now sufier'd to come abroad as the beginning of an EXPERI- 

 MENTAL HISTORY of COLOURS, first edition, with folding plate, 12mo. sound copy in the original 

 sheep (back slightly damaged), 18s H. Herringman, 1664 



' Describing for the'first time the iridescence of metallic films and soap-bubbles '. D. N. B. 



It contains many interesting observations and axioms, which were completed three years afterwards by Newton in his 

 'Optics' (v.Nos. 3249-50, ante). The work also contains many recipes for mixing colours. Pp. 389-4*3 contain a 'Short 

 Account of some Observations about a Diamond that shines in the Dark, with a Treatise upon the score of the Affinity 

 betwixt Light and Colours ', with a separate titlepage. 



6416 - - EXPERIMENTS and CONSIDERATIONS about the POROSITY of BODIES, in Two Essays, first 

 edition, 12mo. sound tall copy in contemporary calf gilt (RARE), 15s Sam. Smith, 1684 



6417 [ ] A FREE ENQUIRY into the VULGARLY RECEIV'D NOTION of NATURE; made in an Essay, 



address'd to a Friend, by R. B., Fellow of the Royal Society, first edition, sm. 8vo. sewn (rare), 

 10s John Taylor, 168 



Containing much of the Baco-Cartesian philosophy propagated by the author. 



6418 The GENERAL HISTORY of the AIR, first edition, sm. 4to. fine copy in old calf (VERY 



RARE), 1. 5s Awnsham and John Churchill, 1692 



Published posthumously, and containing the author's final experiments on the subject, chiefly METEOROLOGICAL. 



6il9 HYDROSTATICAL PARADOXES, made out by NEW EXPERIMENTS (for the most part 



PHYSICAL and Easie), first edition, with 3 folding plates on copper, 12mo. sound copy in contemp- 

 orary calf (RARE), 1. Is Oxford, B. Davis, 1666 



6420 ANOTHER COPY, old calf, newly rebacked, 18* Qd 



'Enforcing, by numerous and striking experiments, the laws of fluid equilibrium.' D. N. B. The author also 

 demonstrates the impossibility of the ' fuga vacui.' 



Way of Estimating Ores, first edition, with front, on copper of testing -scales, 12mo. contemporary 

 sheep (very rare), 1. Is Samuel Smith, 1690 



Containing investigations on specific gravity. Bound up at end is : ' Catalogue of the Philosophical Books and Tracts, 

 written by the Hon. Robert Boyle, Esq. ; together with the Order or Time wherein each of them hath been Published 

 respectively ; with a Catalogue of his Theological Books ' (pp. 14). 



6422 - - The ORIGINE of FORMES and QUALITIES (according to the CORPUSCULAR PHILOSOPHY), 

 illustrated by Considerations and Experiments (written formerly by way of Notes upon an Essay 

 about Nitre), first edition, 12mo. old calf (RARE), 1. 5s Oxford, H. Hall, 1666 



6423 - SECOND EDITION, augmented by a DISCOURSE of SUBORDINATE FORMES, 8vo. old calf, 

 15s ib., a. e., 1667 



' Expounding IMS principles of a ' mechanical philosophy.' Founded on the old atomic hypothesis, these accord in the 

 main with the views of many recent physicists. They postulate one universal kind of matter, admit in the construction 

 of the visible \>orld only moving atoms, and derive diversity of substance from their various modes of grouping and 

 manner of movement.' V, N. L. 



