HENRY SOTHERAN & CO., 140. STRAND. W.C, and 37. PICCADILLY, ^y. 251 



4929 TREDGOLD (Thomas, c.e.) Elementary Principles of Carpentry: a Treatise on the 

 Pressure and Equilibrium of Beams and Timber Frames, the Resistance of Timber, and the Con- 

 struction of Floors, Roofs, Centres, Brid^'es, etc., with the Nature and Properties of Timber and 

 numerous Tables, first edition, tctth 22 copperplates, 4to. A/, calf q Hi (rark), 17a- 6rf 'l8^0 



' With Ihe exception of Barlow's 'Es-say on the Strength of Timber* iu )M7, tr«tl;;old's work was the Urst •♦•rious 

 attempt in Englaiul to determine practically and KcientiHcally the data of resistance. Before his time eueineors rolled 

 chiefly on the formuliK and result* atUimni by Buffou and Pet«r vau Mmj«:henbroek in bin tkyticm HmerimuntaU* 

 etGeonutncu- (v. No. 31G7, anU). Several edition* of Tredgold'H work have b«eu published, aud it ramaint aa authority on 



4930 Third Edition, considerably enlarge<l, with Appendix, containing Spkcimens of various 



Ancient and Modern Roofs, by Peter Barlow, f.b.s., with fine engraved partraU, 50 plaU», 

 and woodcuts, 4 to. hf. morocco, uncut, t. e. g., \2» 1840 



TELFORD'S COPY I 



4931 Practical Essay on the Strength of Cast Iron. conUinin;; Practical Rulo«, Tables, 



and Examples ; also Account of some New EXPERIMENTS, wiih extennivt- Tabieuof iIk- Properties 

 of Materials, first edition, with 4 copperplates, 8vo. hf. calf, with auto. * Thoi. TeXfozd* on 

 title {rare), \2a 6d ]S22 



Aacordlng to Prof. Toilhunter the author waa the flmt tu attempt the det«nnitiat4oii of tlM posiUoo of Um MUlral UiM. 



4932 Fourth Edition, with Notes by Eaton Hodgkinson. f.r.8., and Bxperimaotal 



Researches on the Stren<^'tli and other Properties of Cast Iron, with the Developement of New 

 Principles ; Calculations deduced from them ; and Inquiries applicable to Rigid and TeoaeioiiS 

 Bodies generally, by the EDITOR, with 4 plates, and woodcuts, 8vo. V cl- {title ttampedit U 1842 



4933 Another Copv, ft/, morocco {title stamped), 4s Od 



4934 Another Copy, d. ; with Part II : Experimental Rksbarchks on the Stkbnqth and 



other Properties of Cast Iron, by Eaton Hodgkinson, f.r.8 , with tdates and diagrams, hf. d. 

 — 2 vols. 8vo., 8* 1142.^ 



4935 — ; — Practical Treatise on Rail-Roads and Carriage.s, shewing the Prineides of- 

 Estimating their Strength, Proportions, Expense, and Annual Produce, with the Theory, Efltet, 

 and E.xpense of Steam Carriages, Stationary Engines, and liAS Machinrs. 2nd Ed., with i platstt 

 8vo. hf. cL, uncut (scarce), 12« 6rf 1835 



Containing tables on the maxinmin power of Hteain of a cubic foot of water, a) in high pnaiurs staam SBCioM : h) In 

 a condensing stoani engine, etc. etc. etc., and giving the result of a number of ezperimeau lo flnamrillMl vtth railway 



engineering. Fig. 2ti sliuws an 8-wheel bogie goodii waggon. 



4936 Principles of Warming and Ventilating Public BuildiogH, etc., and of ConsUaeliiig 



Fire-Places. Boilers, Steam Apparatus, Grates, and Drying Rooms, with Remarks on the Nature 

 of Heat and Light, 2nd Ed., improved, with 9 copperplates, and numerous woodcuts^ 8vo. l^. etedf 

 ncal {stamp on title), 5s 18SM 



4937 The Steam Engine : its Invention and Progressive Improvement: an Inventigation of its 



Principles, and its Application to Navigation, Manufactures, and Railways; new Ed., 

 enlarged by the Contributions of eminent Scientific Men, and extended to the Science of Steam 

 Naval Architecture, revised and edited by W. S. B. Woolhouse, f r.a.s., tdth fine steel 

 portraits of the author and James Watt, 125 steel plates {many folding), and numerous woodcuts, 

 2 thick vols. 4to. new hf. buckram, \5s (p. £4. 4*) 1838 



This edition contains an account of exporiinent« to ascertain the ratio of the wpee<l of a ataan boat to Um powar, aad« te 

 the appendix, contributions by P. O. Barlow. ' Uu the Motion of Steam VaaaeU'; JaMsa Rkswick, 'On the StaaM Boats 

 of U. S. A. ' ; JosKi>H Glynn, r.B.8., ' Ou the Indicator', etc. etc. 



4938 Third [last] Edition, greatly enlarged, with 226 steel plates {many fold ing), and 164 



woodcuts, 3 vols. 4to. in 4, hf morocco, £1. U (p. £9. 19< Qd) 18004 



This edition is divided into lx)coniotive Engines, Marine Bnginea(S voU.). acd 8Utionar)r Bagfaaa. TIm to eoisotl r a a 

 include Hir I>aniei Gooch's magnillcent liroad GauRe Single ' Iron Duke ', 1H4M, which with ita fellow«,aAar maajr laboUar. 

 in^'.s, Uxik the fastest exprcsaea on the Great Western Railway till the gange «ai taken up io IMS. 



4939 TKENCHANT (Jean) L'Arithmetique, departie en trois Livrea, enaemble on petit diaoourt 

 des Changes, avcc Tart de CALCULER aux CiLTONS ; revui* et augiuentet* en ceate derniere aditicm, 

 tan t de pi usieurs regies et articles, que d'une Table de |>oid8 de XXII Provinces, oorreqMNMUiw 

 I'une ii rautre ; withholding table. 12nio. old limp villum (BARK), 18« Lyon^ P. Bigaud. 1618 



The author was a follower of Ramus. His work ou calculating by countan— «ea of the few work* oa tiM Ml^taol— la of 



The mode of calnuUting with counters waa a very fkrourite ooe with tba OBadneaiid el aan fa uu to tiM aiiddla of tka 

 XVI. Century. Shakespeare (Winter's Tale, Act IV, Seene 2) makea tha yooaf t hs^ km A mj : ' I eaaaot dot rniOunt 



counters.' 



4940 TBOMHOLT (Sophna) Sur les P^riodes de TAurork Bor^alb d'apri* dca ObBenratioiM 

 faitcs ii (;o<lthaab en Uroenland fin Danish and French], iriM 2 charU, folio (pp. GO), el.,ZiM 



Copenkagnt, 1882 



4941 TBOUESSABT (J.) E.SSAI HiSTORiQUE wur la TiitoRiB des CORPS, Simple* oo El^meatairet, 

 et de leurs divers Modes de Combinaisons, depuia I'Origine de U Science joflqa'A Lavoisier, 8vo. 



sewn, Is 6d ^'^t IW* 



Scarce, and unknown to l/orenz. ... ,. 



4942 TROWBRIDGE (WiUiam Petit, Yale College) Heat as a Source of Power, with Apph- 

 cati()n.s of C;eneral Principles to the CONSTRUCTION of STEAM GENERATORS: an Introduction to 

 the Study of Heat- Engines, with numerous plates and woodcuts, roy. 8vo. c/., 3s (p. 16«) 



New York, 1874 



4943 [TRUCHOT (Charles)] Etude sur la Transmission Electrwue de rENERoiK; with wood- 

 cut, rov. Svo. seivn. Is Qd Clermont-Ferrand, 1891 



4944 TRUTAT (Eugene) La Photooraphie appliqu^ Jl PARCB^LOfllE } unth photographs and 

 woodcuts, post Svo. sewn, IsQd *®'* 



