HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 43, PICCADILLY, W. 571 



11485 [? MARTIN" (Benjamin)] The METHOD of CALCULATING the MAGNIFYING POWER of a 

 REFLECTING TELESCOPE, with a General Table of all the Magnifying Powers of 12 such Tele- 

 scopes, from 4 to 100 Inches focal Distance of the Great Speculum, 8vo. (pp. 8), sewn (rare), 

 3s 6d n. d. 



11486 The NEW ART of SURVEYING by the GONIOMETER: a New Method of measuring Angles 



by this New Instrument with much greater Exactness than can be done by a Plain-Table or 

 Theodolite, the Description and Use of a New Protractor, etc. etc. etc., with 2 folding plates, Svo. 

 (pp. 38), sewn, 4s 1766 



11487 NEW COMPLEAT and UNIVERSAL SYSTEM or BODY of DECIMAL ARITHMETICK, first 



edition, 8vo. old calf, 6s 1735 



11488 NEW EDITION, 8vo. sound copy in contemporary calf, 5s 



' A very full system of decimal arithmetic, applied to all parts of commercial arithmetic. Prof, de Morgan. 

 The work includes ' a new and compleat sett of decimal tables never before published ', and ' an exact and accurate 

 canon of logarithms for natural numbers.' 



1 1489 NEW and COMPREHENSIVE SYSTEM of MATHEMATICAL INSTITUTIONS, agreeable to the 



present State of the NEWTONIAN MATHESIS ; Vol. I, containing Arithmetic, Vulgar and Decimal, 

 Logarithms, Algebra, Geometry, Plain Trigonometry, Conic Sections, FLUXIONS, Svo. old calf, or, 

 old hf. roan, 6s 6d 1759 



'Old Ben Martin (as his admirers called him) was an able, and in this instance a concise writer. He wrote on every 

 mathematical subject (and never otherwise than well, I believe, except on biography).' Prof, de Morgan. 



11490 OPTICAL ESSAYS, containing, a practical Description of several Sorts of Single, Solar, 



and Compound MICROSCOPES ; with their Apparatus and latest Improvements, the Nature of 

 VISION in INSECTS, a Catalogue of the principal MICROSCOPIC OBJECTS, the USE of the REFLECT- 

 ING TELESCOPE as an universal Perspective, the Manner of computing the MAGNIFYING 

 POWER in MICROSCOPES, a New Method of applying the MICROMETER, etc. etc., with folding 

 front, on copper, Svo. sewn (rare), 5s 6d [1770] 



11491 ANOTHER COPY, old sheep, 6s 



At end is a 5-p. Catalogue of Philosophical, Optical, and Mathematical Instruments made by the author, with PRICES. 



11492 PANEGYRiCKon the NEWTONIAN PHILOSOPHY, shewing the Nature and Dignity of the 



Science; and its absolute Necessity to the Perfection of Human Nature, etc. etc., 2nd Edition, 

 Svo. (pp. 62), sewn, 3* 6d 1754 



Containing at end ' A Stricture on the Anti-Newtonians or, Pseudo-Philosophers of the Age ', a poetical effusion 

 in 7 pp. 



11493 IIANrEQMETPIA ; or the ELEMENTS of all GEOMETRY, containing the Rudiments of 



Decimal Arithmetic, Logarithms, and Algebra ; Euclid's Elements ; the Elements of Spherical 

 Geometry, and the Projection of the Sphere in Piano ; a Compendium of Conic Geometry ; and 

 an Epitome of the DOCTRINE of FLUXIONS, with 10 folding plates, Svo. old calf, 5s 1739 



11494 PHILOSOPHIA BRITANNICA: or, a New and Comprehensive System of the NEWTONIAN 



PHILOSOPHY, Astronomy and Geography, with Notes, containing the . . . Proofs and Illustrations 

 of all the Principal Propositions, also the Invention, Structure, Improvement and Uses of all the 

 considerable Instruments, Engines, and Machines, with new Calculations, first edition, with 75 

 folding copperplates, 2 thick vols. Svo. old mottled calf, 10s 6d Reading, 1747 



11495 SECOND EDITION [enlarged], with 81 folding copperplates, 3 vols. Svo. old calf, 



12s 6d 1759 



This edition (which was unknown to D. N. B., where the first only is mentioned) contains a further appendix 

 'concerning the Improvements in Optical Instruments', giving a description of the author's Universal Compound 

 Microscope, his New Solar Microscope, and his Equatorial Telescope, the last of which is interesting for illustrating an 

 early form of an equatorial stand, with 6 extra plates. 



11496 FOURTH [LAST] EDITION, with 81 folding copperplates, 3 vols. Svo. old tree calf extra, 



14* 1788 



The above lectures were probably inspired by those of Dr. Desaguliers, to whom Martin acted as an assistant, a fact 

 unknown to D. N. B., and other biographies, but brought to light by Prof, de Morgan from a pamphlet published in 1751 

 by Bp. Home. 



13497 The PHILOSOPHICAL GRAMMAR: a View of the Present State of EXPERIMENTAL 



PHYSIOLOGY, or Natural Philosophy. I. SOMATOLOGY: the universal Nature and Properties of 

 Matter, etc. II. COSMOLOGY. III. AEROLOGY, shewing the wonderful Nature and Properties 

 of the Air, Wind, Meteors, etc. IV. GEOLOGY, first edition, with 16 folding plates, sm. Svo. hf. 

 roan (title mended, and a few II. torn) ; rare, 6s 6d 1735 



11498 SECOND EDITION, with Alterations, and very large Additions by way of Notes, with 26 



folding copperplates, Svo. old calf (joints cracked), 4s 6d 1738 



11499 ANOTHER COPY, sound copy in contemporary mottled calf, 6s 



11500 THIRD EDITION, corrected and improved, with 26 copperplates, Svo. old calf (binding 



damaged), 4s 1748 



11501 FOURTH EDITION [unchanged], with 26 copperplates, Svo. old calf (joints cracked), 



4s 1753 



' The most successful of Martin's works '. Z). N. B. It was several times re-printed in a French translation by Puisieux. 



11502 PLAIN and FAMILIAR INTRODUCTION to the NEWTONIAN PHILOSOPHY, first edition, 



with 6 folding plates, Svo. sewn, 4s 1754 



11503 ANOTHER COPY, old calf gilt (joints weak), 5s 



11504 - FIFTH EDITION, with 6 folding plates, Svo. old calf (joints broken), 3s 6d 1765 

 11505 The PRINCIPLES of PUMP- WORK illustrated, and applied in the Construction of a NEW 



PUMP without Friction, or Loss of Time, or Water, in Working, proposed for the Service of the 

 British Marine, with 2 folding copperplates, Svo. (pp. 33), sewn (rare), 4s 6d [c. 1767] 



This work was unknown to the author's biographer in D. N. B. One plate illustrates the author's patent ' frictionless ' 

 pump. 



