HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 43, PICCADILLY, W. 649 



12975 PARR (George Dudley Aspinall ; Univ. Leeds) PRACTICAL ELECTRICAL TESTING, in* 

 Physics and Electrical Engineering, with 231 illustrations, 8vo. cl., 4* (p. 8s 6d) 1901 



12976 PARR (Samuel Wilson, Univ. Illinois) The COALS of ILLINOIS : their Composition and* 

 Analysis, with 10 illustrations, impl. 8vo. (pp. 40), sewn, Is Qd Urbana, 1904- 



12977 PARRY (Ernest John, F.I.C.) CHEMISTRY of ESSENTIAL OILS and ARTIFICIAL PERFUMES,. 

 with 20 woodcuts, 8vo. cl., 8s (p. 12s Qd nett) 1899" 



12978 PARRY (John, F.C.S., Ebbw Vale Iron and Steel Co.) On the SPECTRA of the GASES and 

 VAPOURS evolved on HEATING IRON and other METALS, with 15 photographic plates, containing 

 several hundred spectra, 8vo. cl. (SCARCE), 15s privately printed, Pontypool, 1885 



12979 PARRY (Rear-Adml. Sir William Edward), Commr. Henry FOSTER, R.N., F.R.S., and 

 Rear.-Adml. Sir James Clark ROSS, F.R.S. ; Arctic explorers : OBSERVATIONS to determine the 

 Amount of ATMOSPHERICAL REFRACTION at PORT BOWEN, 1824-5, 4to. (pp. 27), sewn, 3s 6d 1826 



Captain Foster was astronomer to Admiral Parry's Polar expeditions, and was afterwards drowned in the river 

 Chagres while measuring the Isthmus of Panama. 



12980 PARSELL Jr. (Henry V. A., M.A.I.E.E.), and Arthur J. WEED, M.E. : GAS ENGINE 

 CONSTRUCTION: a Practical Treatise, describing the Theory and Principles of the Action of Gas 

 Engines of various Types, and the Design and Construction of a Half Horse Power Engine, with 

 140 illustrations, roy. bvo. cl., 5s (p. 10* 6d nett) 1900* 



Pp. 285-92 contain an Annotated Bibliography. 



12981 PARSEY (Arthur ; miniaturist) The QUADRATURE of the CIRCLE DISCOVERED. Submitted 

 to the Consideration of the Royal Society, on whose Protection the Author humbly thiows him- 

 self, with folding plate, 8vo. (pp. 24), sewn (rare), with author's insor., Is 6d 



printed for the author, 1832: 



' In July 1831, reading an article on squaring the circle, and finding there was a difficulty, he set to work, got a light 

 denied to all the mathematicians in some would say through a crack, and advertised in the Times that he had done the 

 trick. He then prepared this work, in which, those who read it will see how, he showed that 3'141o ( .) . . . should be 

 3'0625.' Prof, de Morgan. The author also distinguished himself as a paradoxer on perspective. 



12982 PARSHALL (Horace F., M.I.C.E.), and Henry Metcalf HOBART, M.I.E.E. : ARMATURE. 

 WINDINGS of ELECTRIC MACHINES [with ARMATURE WINDING TABLES (pp. 80)], 129 full-page 

 and other illustrations, 4to. cl., Ss 6d (p. 1. 16s) New York, 1895- 



12983 PARSLOE (Joseph) OUR RAILWAYS : Sketches Historical and Descriptive, with Practical 

 Information as to Fares and Rates, etc., and a Chapter on Railway Reform, cr. 8vo. hf. brown 

 morocco, 2s (p. 6s in cl.) 187S 



12984 PARSONS (John), and Thomas WASTELL : CLAVIS ARITHMETICS : or a Key to Arith- 

 metick in Numbers and Species ; wherein Arithmetick and Algebra are Abridged, Demonstrated 

 and made Easie, in their several Fundamentals and Consequents, collated from the most Authentic 

 Authors, with many Improvements and Useful Theorems, not hitherto Extant, with 3 copperplates, 

 12mo. sound copy in old calf (joints cracked) ; RARE, 8* 6d 



R. Mount and T. Page, at the Postern on Tower Hill, 1703 



' The old system of divison is rather recommended. There is a very neat work on algebra at the end.' Prof, de Morgan. 

 The number of old mathematical books printed on and about Tower Hill was doubtless due to the number of master - 

 mariners lodging round about the shipping in the Pool. 



12985 PARTINGTON (Charles Frederick) The BUILDER'S COMPLETE GUIDE : comprehending the 

 Theory and Practice of Architecture, Bricklaying, Masonry, Carpentry, Joinery, Painting, 

 Plumbing, etc. etc. ; with 5 copperplates, btsides woodcuts, 8vo. boards, 3s 1825 



12986 COURSE of LECTURES on the STEAM ENGINE, with 11 plates (some folding), 12mo. boards, 



uncut (rare), 12s 1826 



Valuable for containing a reprint of a very rare work : A Description and Draught of a new-invented Machine for 

 carrying Vessels or Ships out of, or into any Harbour, Port, or River, against Wind and Tide, or in a Calm, by JONATHAN 

 HULLS, 1737, with copperplate by J. Shury, illustrating Hulls' s steam boat. 



12987 HISTORICAL and DESCRIPTIVE ACCOUNT of the STEAM ENGINE, comprising the various 



Modes of employing Elastic Vapour as a Prime Mover in Mechanics ; with Appendix of PATENTS 

 and PARLIAMENTARY PAPERS, with 8 fine folding plates on copper of historic engines, besides 

 woodcuts, 8vo. hf. calf (rubbed), 6s 1822 



12988 ANOTHER COPY, hf. calf, with auto. ' George Rennie, Royal Mint', Is 



Containing a bibliography on the subject from 1629 to 1822. This first edition gives one of the earliest accounts of 

 locomotive engines and steam navigation. 



12989 THIRD [LAST] EDITION, enlarged [entitled: POPULAR and DESCRIPTIVE ACCOUNT of 



the STEAM ENGINE . . . and of STEAM NAVIGATION] , w#A folding copperplates, besides wood- 

 cuts, 8vo. hf. calf gilt, with auto, of GEORGE RENNIE, C.E., F.R.S. , on title (scarce), 10s Qd 1838 



This edition contains besides additions to the text four new appendixes, viz. : Steam Boats : Evidence of the Commons' 

 Committee on Sceam Packets : on Steam Carriages : Description of a Steam Indicator. 



12990 MANUAL of NATURAL and EXPERIMENTAL PHILOSOPHY, with 4 copperplates, and 270 



woodcuts, 8vo. cl. (cover soiled), 4s [1828] 



12991 The MECHANICS' LIBRARY, or Book of Trades ; comprehending Architecture, Carpentry, 



Joinery, Bricklaying, Plastering, Masonry, Brickmaking, Painting, Glazing, Plumbing, Clock and 

 Watch Making, Coach-Making, Printing, Engraving, and Shipbuilding, with 9 plates, besides 

 woodcuts, 8vo. (pp. 736), cl., 5s [1825} 



12992 The SHIP-BUILDERS' COMPLETE GUIDE ; comprehending the Theory and Practice of 



Naval Architecture, with its Modern Improvements, with 3 plates, and numerous woodcuts, 8vo. 

 sewn, 5s 1826 



Containing a full account of the inventions and improvements in naval architecture by the great Admiralty designer 

 SIR ROBERT SKPPINGS, K.R.S. 



12993 PARTINGTON (J. Riddick, Univ. Manchester) HIGHER MATHEMATICS for CHEMICAL 

 STUDENTS, with 44 diagrams, cr. 8vo. cl., Ss (p. 5s) [1911] 



