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



14601 RUTHERFORD (Sir Ernest, F.R.S., McGill Univ., Montreal ; Univ. Manchester ; Nobel 

 Laureate) RADIO-ACTIVITY, first edition, with illustrations (including plate), 8vo. cl., 5s (p. 10* Qd 

 nett) Univ. Press, Cambridge, 1904 



'I scarcely think any other person has spent more hours in reading the first and second editions of Rutherford's 

 ' Radioactivity ' than I have '.Lord Kelvin. 



14602 SECOND EDITION [greatly enlarged and partly rewritten], with plate and 108 illustrations, 



8vo. cl., 7s Qd (p. 12s Qd nett) apud eandem, ibidem, 1905 



14603 RADIOACTIVE TRANSFORMATIONS, with53 illustrations, 8vo. cl. (o.p.), 9s (p. 16s nett) 190G 



14604 . AMERICAN EDITION, 8vo. cl., 8s New York, 1906 



The standard works on the subject. They contain the author's important investigations and discoveries. The second 

 work includes an Historical Introduction (pp. 1-36). 



Both works are now out of print, arid have been partly replaced by the author's ' Radio-active Substances and their 

 Radiations.' 



14605 RUTHERFORD (William, F.R.A.S., Roy. Military Academ.y) STATICAL FRICTION, Friction 

 of Cords, and Revetments ; third Edition, with 2 folding plates, 8vo. (pp. 52), sewn, "2s 6d 



Woolwich, 1862 



14606 Die VOLLSTANDIGE LOSUNG NUMERISCHER GLEICHUNGEN bei welcher durch ein und 



dasselbe Verfahren sowohl die imaginaren, als auch die reellen Wurzeln leicht bestimmt werden, 

 iibersetzt von AUGUST WiEGAND, 4to. (pp. 30), sewn, 2s Halle, 1849 



14607 RUTLEY (Frank, F.G.S.) The STUDY of ROCKS : an Elementary Text-Book of Petrology, with 

 89 woodcuts, 12mo. cl., 2s 3d 1879 



14608 RUTTER (J. O. N., F.R.A.S.) GAS-LiGHTlNG : its Progress and its Prospects, with Remarks 

 on the Rating of Gas-Mains, and a Note on the ELECTRIC-LIGHT, 8vo. sewn (scarce), 6s 1849 



Especially interesting for the note, which is probably one of the earliest references to electric lighting. The author 

 mentions that 'about six years since it was shown in the streets of Paris, where, for a short time, it excited as much 

 attention as it has lately done in this country.' The current of course was produced by a galvanic battery, and the con- 

 tinuous adjustment of the carbon points then proved an insuperable practical difficulty. 



14609 HUMAN ELECTRICITY : the Means of its Developement, illustrated by Experiments, with 



front., and woodcuts, cr. 8vo. cl., 4s 1854 



' My special object has been to invite attention to electricity in its various relations with vitality. This is no longer a 

 topic for vague speculations or uncertain conjectures,' etc. etc. Preface. 



The Appendix includes ' Od ' (v. Reichenbach, Nos. 14001-2, ante), and Table-Moving. 



14610 - - PRACTICAL OBSERVATIONS on GAS-LIGHTING; second Edition, post 8vo. (pp. 58), 

 sewn, 3s Qd 1833 



14611 RYAN (John, M.D.) The PREPARATION of LONG-LINE, FLAX-COTTON, and FLAX- WOOL, by 

 the CLAUSSEN PROCESSES ; with Description of the Chemical and Mechanical Means employed, 

 and Claussen's System of Bleaching Fibres, Yarns, and Fabrics, with 12 woodcuts, 8vo. cl. (cover 

 torn) ; scarce, 6s Qd 1852 



According to the preface, the first description of the Claussen Process, written at the inventor's own wish. 



14612 RYDER (Adml. Sir Alfred Phillipps) TREATISE on ECONOMY of FUEL : showing how it 

 may be attained on Board MEN-OF-WAR STEAMERS ; with the Considerations which should be 

 carefully studied when Engines are being ordered f or Steamers-of- War, Mail Packets, or Merchant 

 Ships, in Order that their respective Duties may be performed with the least possible Consumption 

 of Fuel, with diagrams, and folding table, 8vo. cl., 5s Qd 1852 



The work was unknown to the author's biographer in D. N. B. There were not many steamships in the Navy in 1852 ! 

 and tho$e nearly all paddle-boats, with masts and sails, and the multifarious methods of wasting coal here denounced are 

 very curious. Admiral Ryder of course urges working expansively. 



14613 SABATIER (Paul, de I'lnstitut), et Jean Baptiste SENDERENS ; Institut Catholique, 

 Toulouse: NOUVELLES METHODES GENERALES d'HYDROGENATiON et de DEDOUBLEMKNT 

 MOLECULAIRE basees sur PEmploi des Metaux Divises, 8vo. sewn (o.p.), 4s 



Containing a description of the author's method of distinguishing primary, secondary, and tertiary alcohols. This 

 M. Paul Sabatier is not the client of St. Francis of Assisi. 



14614 SABIN (Alvah Orton; Univ. Vermont) The INDUSTRIAL and ARTISTIC TECHNOLOGY of 

 PAINT and VARNISH, with numerous plates and other illustrations, 8vo. cl., Is Qd (p. 12s Qd nett) 



New York, 1906 



14615 SABIN (Louis Carlton. c.E., U.S. Army) CEMENT and CONCRETE, with 16 diagrams, 8vo. 

 cl., WsQd (p. 1. Is nett) 1905 



'The original investigations forming the basis of the work were made in connexion with the construction of the Poe 

 Lock at St. Mary's Falls Canal, Michigan, under the direction of the Corps of Engineers, U.S. Army.' Preface. 



14616 SABINE (General Sir Edward, R.A., P.R.S.) CONTRIBUTIONS to TERRESTRIAL MAGNETISM, 

 Nos. II and VI, with 5 maps (3 folding), 2 parts 4to. (pp. 163), sewn, 4s 60? 



' General Sabine discovered that magnetic disturbances of the earth are due to the sun, but not to his heat and light ; 

 and are invariably accompanied by the aurora and by electric currents in the surface of the earth.' Alex. liuchan, F.R.S. 



14617 On the COSMICAL FEATURES of TERRESTRIAL MAGNETISM (Reatie Lecture), with 



diagrams, post 8vo. (pp. 24), sewn, 2s Qd 



14618 MAGNETIC OBSERVATIONS, 8vo. (pp. 32), sewn, 2s 



14619 OBSERVATIONS made at the MAGNETIC OBSERVATORIES of TORONTO, TREVANDRUM, and 



ST. HELENA, during a remarkable Magnetic Disturbance, Sept. 25-26, 1841, with folding chart, 

 8vo. (pp. 19), sewn, 2s Qd 



14620 REPORT on the VARIATIONS of the MAGNETIC INTENSITY observed at different Points 



of the EARTH'S SURFACE, with 3 folding plates, 8vo. cl., uncut (scarce), withinscr. ' George Eennie, 

 Esq. from the Author ', 8s Qd 



This work was unknown to the author's biographer in D. N. B. It contains an historical account of observations from 

 Rossel, 1791 to 1836. 



14621 SALTER (Mary) A NEW SYSTEM of GEOLOGY, with Archaeological Proofs of the Destruction 

 of the World by Fire and Water, with portrait and 11 other plates (2 folding), cr. 8vo. cl., 3s 

 (p. 10s nett) 



