August 15, 1890.] 



SCIENCE. 



LOW-PRICED BOOKS. 



Any of the following low-priced books will be 

 mailed postpaid on receipt of price. 



SCIENCE BOOK AGENCY, 



47 Lafayette Place, New York. 



AGRICUIiTURE. 



Agricultural Drainage. By J. B. Denton. 8''. $i.2c 



Animal Food Resources of Different Nations. By 



P. L. Simmonds. 12° i.oc 



Armstrong's Agriculture. 18° .7; 



British Wild-Flowers Considered in Relation to 



Insects By Sir John Lubbock 1.2^ 



Coffee and Chiccory. By P. L. Simmonds. 12°. .71 



Diseases of Field and Garden Crops, chiefly such 

 as are caused by Fungi. By W. G. Smith. 

 16° i.S< 



Flowers, Fruits, and Leaves. By Sir John Lub- 

 bock 1.2' 



Flowers, The Colours of. By Grant Allen. 12° i.o< 



Fruits, Selected ; Their Culture, Propagation, 

 and Management in the Garden and Orchard. 

 By C. Downing. 12° 1.5c 



Gardening for Ladies, and Companion to the 



Flower-Garden. By Mrs. J. C. Loudon. 12°. 1.51 



Hops : Cultivation, Commerce, and Uses. By P. 



L.Simmonds. 12° i.2j 



Horticulture, The Theory of ; or. An Attempt 

 to explain Gardening upon Physiological Prin- 

 ciples. By J. Lindley and A. J. Downing 

 12° i.5< 



Sewage Irrigation by Farmers. By R. W. Birch. 



8° i.o( 



Sew.age Utilization. By B Latham. 8°.' i.oi 



Useful Animals and their Products. By P, L. 



Simmonds. 16° 1.2; 



AKCHITECXCKE AND BUIIiDING 

 CONSTKCCTION. 



Stepping-Stone to. By 



Bun 



Tho 

 shav 



Construction. By Edward J. Burrell. 



Stei 



Chimneys for Furnaces, Fireplaces, 



Boilers. By R. Armstrong, C.E. 18° 



Cooking Range, The. By F. Dye. 12° 



Fires in Theatres. By E.M.Shaw. 12° 



Gas Fitter's Guide. By J. Eldridge. 12° 



Hot-Wathr Apparatus, Fitting. By F. Dye 12° 

 Hot- Water Apparatus, Fixing. By J. Eldridge. 



Ste; 



Hot-Water Fitting a 

 ratus. By F. Dye. 

 Pump Fitter's Guide. By J. Eldndge. 



Cooking Appa- 



Strength of Bi 



Professor W. Allan. 

 Ventilation of America] 



Boswell Reid, M.D. 

 Ventilation of Buildings, 



der Transverse Loads. By 

 Dwellings. By David 

 ByW^ F.' Butler." is" 



ASTKOXOMV AND NAVIGATION. 



Astronomy for Beginners. By Francis Fellowes. 



Elementary. By R. A. 



Hour 



Willi! 



'ith 



Magnetism and the Deviation of the Compass, 

 By John Merrifield. 18° 



Navigation, A Treatise on. for the Use of Stu- 

 dents. By John Merrifield- 12° 



Sea-Routbs, The Shortest, and Maps for finding 

 them in a Few Seconds (Great-Circle Sailing). 

 By R. A. Proctor. 4° 



Student's Atlas, The. By R. A. Proctor. 8° 



CHEMISTRY. 



EXPE 



NTAL Chemistry for Junior Student 

 By J. E. Reynolds. 



Part I . Introductory 



Part II. Non-Metals 



Part III. Metals 



Part IV. Chemistry of Carbon Compounds, 



Organic Chemistry 



Farad.-\y's Chemistry of a Candle. 16° 



Practical Chemistry ; the Principles of Qualit 

 tive Analysis. By William A. Tilden. 8°.. 

 Inorganic Chemistry, An Introducth 

 r The Principles of Analysis. By Willia 



Practical Organic Analysis, An Introduction to. 



By George E. R. Ellis. S° 



Qualitative Analysis and Laboratory Practice, 



Manual of. By T. E. Thorpe and M. M. Pat- 



1 Muii 



Qualitative Chemical Analysis, A Short Course 

 in. By Professor I. M. Crafts and Professor 

 Charles A. Schaeffer. 12° 



Qualitative Chemical Analysis. An Elementary 

 Manual of. By Maurice Perkins. 12" 



Quantitative Analysis. By H. Carrington Bol- 

 ton. 8° 



Quantitative Chemical Analysis. By T. E. 

 Thorpe. 18° 



Tables for the Analysis of a Simple Salt for Use 

 in School Laboratories. ByA.Vlnter. 8° 



EDUCATION. 



British and American Education. By Mayo W. 



Hazeltine. 32° S 



Culture of the Observing Faculties. By Rev. 



Wairen Burton. 16° 



Library, The. By .•\. Lang. With a Chapter on 



Modern Illustrated Books, by Austin Dobson. 



Mahaffv's Old Greek Education. 16° 



Manchester Science Lectures for the People 



Overpressure in High Schools in Denmark. By 



Dr. Hertel 



Seeing and Thinking. By W. K. Clifford 



Spelling Reform from an Educational Point of 



View. By J. H. Gladstone 



EliECTRICIXY. 



Alternate Current Machinery. By G. Kapp. 



18°.... 



Chemistry of the Secondary Batteries of Plante 



and Faure. By J. H. Gladstone and A. Tribe. 

 Dynamic Electricity. By John Hopkinson, J. A. 



Schoolbred, and R. E. Day. 18° 



Dynamo-Electric Machines, Recent Progress in. 



By Professor Sylvanus P. Thompson. 18°. . . . 



Electric Bells. By F. C. Allsop. 12° 



Electric Lighting from Central Stations. By G. 



Electricity, Supply of, by Local Authorities. 



By K. Hedges. 8° 



Electro-Magnetic Telegraph, A Hand-Book of 



the. By A. E. Loring. 18° 



Electro- Magnets. By Th. Du Moncel. Tr. by 



C. J. Wh 



FUE 



Gases 



iy. By F. S. Beecher. le-. . 

 Incandescent Electric Lights, with Particular 



Reference to the Edison Lamps at the Paris 



Exhibition. By Comte Th. Du Moncel, W. 



H. Preece. J. W. Howell, and others. 18° ... . 

 Induction Co ls : How Made and How Used. 



iS" 



Terrestrial Magnetism and the Magnetism of 



Iron Vessels. By Professor Fairman Rogers. 



i8° 



Thermo-Elkctricity. By A. Rust. 8° 



Wrinkles in Electric Lighting. By V. Stephens. 



ENGINEERING. 



Actual Lateral Pressure of Earthwork, The. By 

 Benjamin Baker. 18" 



Arches, Theory of. By Professor W. Allan. 18° 



Arches, Theory of Solid and Braced. By William 

 Cain, C.E. 18° 



Beams and Girders. Practical Formulas for their 

 Resistance. By P. H. Philbrick. 18° 



Boilfr Incrustation and Corrosion. By F. J. 

 Rowan. 18° 



Bridge and Tunnel Centres. By John B. Mc- 

 Master, C.E. 18° 



Bridges, On the Theory and Calculation of Con- 

 tinuous. By Mansfield Merriman. Ph.D. 18° 



Bridges, Practical Treatise on the Properties of 

 Continuous. By Charles Bender, C.E. i3°.. 



Cable-Making of Suspension Bridges- By W. 

 Hildenbrand, C.E. 18° 



Compound Engines. Tr. from the French of A. 

 Mallet. 18° 



Flow of Water in Open Channels, Pipes, Conduits, 

 Sewers, etc.; with Tables By P. J. Flynn, 

 C.E. 18" 



Foundations. By Pr >fessor Jules Gaudard, C.E. 

 Tr. from the French. iS° 



Friction of Air in Mines. By J. J. Atkinson. 



, By C. William Siemens, D.CL.; to which 

 appended the Value of Artiiicial Fuel as 

 impared with Coal, by John Wormald, C.E. 



I" 



with in Coal-Mines. By J. J. Atkin- 



Helicoidal Oblique Arches, Treatise on the 

 Theory of the Construction of. By John L. 

 Culley, C E. 18° 



High Masonry Dams. By John B. McMaster, 

 C.E. 18° 



How to draw a Straight Line : A Lecture on Link- 

 ages. By A. B. Kempe 



Ice-Making Machines. From the French of M. 

 Le D9(ix. iS" 



Ki.nematics oi Machinery. By Professor Ken- 

 nedy. With an Introduction by Professor R. 

 H.Thurston. iS" 



Linkages : the Different Forms and Uses of Ar- 

 ticulated Links. By J. D. C. Be Roos. 18°.. 



Maximum Stresses in Framed Bridges. By Pro- 

 fessor Wdliam Cain, C.E. 18° 



Metals and their Chief Industrial Applications. 

 By C. R. A. Wright 



Metals, The Fatigue of, under Repeated Strains. 

 Fro n the German of-Professor Ludwig Spang- 

 enburgh,with a Preface by S. H Shreve, A.M. 



By 



Plate Girder Construction. By Isami Hiroi. 

 Practical Designing of Retaining Walls 



Arthur Jacob. A. B. 16° 



Proportions of Pins used in Bridges. By Charles 



Bender, C.E. iS" 



Railroad Economics; or. Notes, with Comments. 



By S. W. Robinson. C.E. 18° 



Retaining Walls, Surcharged and Different Forms 



of. By James S. Tate, C.E. 18° 



Safety Valves. By Richard H. Buel, C.E. 18° 

 Skew Arches. By Professor E. W. Hyde, C.E. 



lUus. 18° 



Stadia Surveying. The Theory of Stadia Meas. 



urements. By Arthur Winslow. 18° 



STEAM-Boilor Explosions. Ry Zerah Colburn. 18° S 



Stfam-Engine Indicator, The, and its Use. By 

 W. H. LeVan. 18° 



S TEAM Injectors. Tr. from the French of M. Leon 

 Pochet. 18° 



Storage Reservoirs, On the Designing and Con- 

 struction of. By Arthur Jacob, A. B. 18° 



Strength of Materials. By William Kent, C.E. 

 18° 



Strength of Wrought-Iron Bridge Members. By 

 S. W. Robinson, CE. i8» 



Testing-Machines, their History, Construction, 

 and Use. By Arthur V. Abbott. 18° 



Theory of the Gas-Engine, The. By Dugald 

 Clerk. 18° ..... 



Topographical Surveying. By G. J. Specht, 

 Prcfessor A. S. Hardy, John B. McMaster, 



and H. F. Walling. 18° 



SMISSION of Power by Compressed Air. By 



Tr. 



Robert Zahner, M.E. 



of Power by Wire Ropes. By Al- 



W. Stahl, U.S.N. 



Turbine Wheels. By Professor W. P. Trow- 

 biidge. 18° 



Ventilation of Coal-Mines, The. By W. Fair- 

 ley, M.E. 18° 



VoussoiR Arches, A Theory of. By Professor W. 



E. Ca 



the Teeth of. 



VoussoiR Arches applied to Sto! 



nels, Culverts, and Domes. 



William Cain. il>° . 



Wheels. A Practical Treatise < 



By Professor S. W. Robinson. 



MISCEIiliANEOUS. 



Graphic Method for solving Certain Algebraii 



Equations. By Professor George L. Vose. iS' 



Lfahv's The Art of Swimming in the Eton Style 



Life History Album, By Francis Gallon. 4°... 



Life of Faraday. By J. H. Gladstone. 16° 



Polarisation of Light. By W. Spottiswoode . . . 

 Record of Family Faculties. By Francis Galton 





:Dii 



nds of the World. 4° 



N.iXURAIi HISTORY. 



Colours of Flowers. On the. .'\s Illustrated in 



the British Flora. By Grant Allen 



Common Frog, The. By St. George IVIivart 



Darwin, Charles. Memorial Notices reprinted 



from " Nature." By Professor Huxley 



Degeneration. By E. Ray Lankester 



Essays Selected from Lay Sermons, Addresses, and 



Reviews. By G. H. Huxley, LL.D 



Griscom's Animal i\Iechanism. 18° 



Origin and Metamorphoses of Insects, On the. By 



Sir John Lubbock 



Rennie's Natural History of the Elephant. 18°.. 

 Rennie's N tural History of Quadrupeds. 18°.. . 

 Scientific Evidences of Org..nic Evolution. By 



G.J.Romanes 



TALESof the Birds. By W. Warde Fowler 



Year with the Birds, A. By W. Warde Fowler. . . 



SANITARY SCIENCE. 



Air We Breathe, the, and Ventilation. By Pro- 

 fessor H. A, Mott. 16° 



Bad Drains, and How to Test them. By R. H. 



Reeves. 12° 



and Sloppy Streets. By H. P. 



Draii 



;e and Puti 



. By T Rowan. 8°.. 



By J. Phillips. 8° 



UwELLlNG-fiousES : Their Sanitary Construction 

 and Arrangements. By Profesior W. H. Cor- 



field. 18° 



f ASHlOiV in Deformity. By William Henry Flower. 



Food. The Composition, Digestibility, and Nu- 

 tritive Value of. By Professor Henry A. 

 Mott 



Health, The Laws of. By W. H. Corfield. 8"".. 



Health-Science, A Manual of. By Andrew Wil- 

 son. 8° 



Healthy Foundations for Houses. By Glenn 



Hints on taking a House. By H. P. Boulnois. 

 16° -. 



House Drainage and Sanitary Plumbing. By W. 

 P.Gerhard. 18° 



Maternal Management of Children in flealth 

 and Disease. By Dr. Thomas Bull. 12° 



Pneumatic Drainage. By A. Smith. 8° 



Potable Water and the Different Methods of de- 

 tecting Impurities. By Charles W. Folkard. 

 18° 



Sanitary Condition of Dwelling-Houses in Town 

 and Country. By George E. Waring, jun. 18°. 



Sanit.ary Drainage of Buildings. Notes embodying 

 Recent Practice in. with Memocand i on the 

 Cost of Plumbing Work. By W. P. Gerhard, 



C. E. 



Protection. By W. Parry. 8= 



Sanitary Works Abroad. By R. Mjnning. 8°.. 

 Sanitation, Simplicity in. By E. T. Blake. 8°. 

 Sewage. Disposal of. By Maxwell and Tuke. 8°. 

 Sewer Gases: Their Nature and Origin. By A. 



De Varona. 18° 



Sewer.age and Sewage Utilization. By Professor 



W. H. Corfield. 18° 



Shone Sewerage System. By E. Ault. 8° 



Storage of Water. By J. B. Denton. 8° 



Ventilation, Mechanics of. By George W. Raf- 



r,C. E. 



