HENRY SOTHERAN & CO., 140, STRAND, W.C, and 43, PICCADILLY, W. 64» 



12975 PARR (George Dudley Aspinall ; Utiiv. Leeds) Practical Electrical Testing, in 

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



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

 Analysis, icith 10 illustrations, impl, 8vo. (pp. 40), seivn, Is Gd Urbana, 1904 



12977 PARRY (Ernest John, f.i.c.) Chemistry of Essential Oils and Artificial Perfumes, 

 with 20 woodcuts, 8vo. cl.. Si- (p. 12* Qd nett) 1899 



12978 PARRY (John, f.c.s., Ebhw Vale Iron and Steel Co.) On the Spectra of the Gases and 

 Vapours evolved on Heating Iron and other Metals, with 15 photographic plates, coniaininf^ 

 several Jiundred spectra, 8vo. cl. (SCARCE), 15s privately printea, Pontvpool, 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, as 6c? 182(» 



Cai)taiii Foster was astronomer to Admiral Parry's Polar expeditions, ai.d was afteiwards drowned in the riven." 

 Chagres wbilo 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 Tyi)es, and the Design and Construction of a Half Horse Power Engine, with 

 140 illustrations y roy. 8vo. c/., 5* (p. 10* %d nett) 190O 



Pp. 2S5-92 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, u'ith folding plate, 8vo. (pp. 24), seum (rare), with author's inscr.. Is Qd 



printed for the author, 18.S2: 



' In July 1831, reading an article on squaring the circle, and finding there was a difhculty, 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 ho had done the- 

 trick. He then prepared this work, in which, those who read it will see how, he showed that 3l4l5it . . . should be- 

 :i'0&2'<.' — Prof, lie Morgan. The author also distinguished himself as a paradoxer on perspective. 



12982 PARSHALIi (Horace F., m.i.c.e.), and Henry Metcalf HOBART, m.i.k.e. : Armature- 

 Windings of Electric Machines [with Armature Winding Tables (pp. 80)], 129 full-page 

 and other illustrations, 4to. cl., Ss Qd (p. £1. 16.$) New York, 1895- 



129S3 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. 6^ in cl.) 1878- 



12984 PARSONS (John), and Thomas WASTELL : Clavis Arithmetice : 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 Vsehil Theorems, not hitherto Extant, with 3 cojyperplates., 

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



7i*. Mount and T. Page, at the PoUern on Toiver Hill, 1703 

 ' The old system of divison is rather recommended. There is a very neat work on algebra at the end. '—Pro/, 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 Builders Complete Guide : comprehending the 

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

 Plumbing, etc. etc. ; with 5 copperplates, hsides woodcuts, 8vo. boards, Zs 1825» 



129S6 Course of Lectures on the Steam Engine, with \1 plates (some folding), 12mo. board^y 



imcut (rare), \2s 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 

 Htlls, 1737, v:ith mppcri^ute by J. Shnrtj, illustrating Hullf's steam Ixxtt. 



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, besidc» 

 ivoodcuts, 8vo. /(/. calf (rubbed), 0« 1822 



12988 Another Copy, hf. calf, with auto. * George liennie, Royal MinV, Is 



Containing a bibliography on tiie sutiject from 162) to 1S2J. 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 NAViGATiOii],2vith9 folding copperplates, besides wood- 

 cuts, 8vo. hf calf gilt, with auto, of George Kennie, c.e., f r.s , on title (scarce), lOs 6d 1838^ 

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

 Committee on Steam 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), 4* [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, Engiaving, 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 icoodcuts, 8vo^ 

 sewn, 55 1826 



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

 Sin Robert Skpi-ings, k.u.s. 



12993 PARTINGTON (J. Biddick, Univ. Manchester) Higher Mathematics for Chemical 

 Students, with 44 diagrams, cr. 8vo. cL, 3s (p. 5s) [19111 



