August 8, 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. 



aorictti^xitre:. 



Agricultural Drainage. By J. B. Denton. S*'. $1.20 

 Animal Food Resources of Different Nations. By 



P. L. Simmonds. 12° i . 00 



Armstrong's Agriculture. 18° 75 



British Wild- Flowers Considered in Relation to 



Insects By Sir John Lubbock 1.25 



CoFFEK and Chiccory. By P. L. Simmonds. 12°. .75 

 Diseases of Field and Garden Crops, chiefly such 

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



16° 1.50 



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

 bock, 1 . 25 



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

 Fruits, Selected : Their Culture, Propagation, 

 and Management in the Garden and Orchard. 



ByC. Downing. 12° . 1.50 



Gardening for Ladies, and Companion to the 



Flower -Garden. By Mrs. J. C. Loudon. 12°. 1.50 

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



L. Simmonds. 13° 1-35 



Horticulture, The Theory of j or. An Attempt 

 to explain Gardening upon Physiological Prin- 

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



12° I. SO 



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



8** I.oo 



Sewage Utilization. By B. Latham. 8° i . 00 



Useful Animals and their Products. By P. L. 



Simmonds. 16° i . 25 



architjgcture: and ruilding 

 constrvctioiv. 



Architecture, the Stepping-Stone to. By 



Thomas Mitchell. 18° 5° 



Boiler and Water Pipes, Kitchen. By H. Grim- 



shaw. 8° 40 



Building Construction. By Edward J. Eurrell. 



12° 80 



Chimneys for Furnaces, Fireplaces, and Steam- 



Boilers. By R. Armstrong. CE. 18° 50 



Cooking Range, The. By F. Dye. 12'* 20 



Fires in Theatres. By E M. Shaw. 12° i .25 



Gas Fitter's Guide. By J. Eldndge. 12° 40 



Hot-Water Apparatus, Fitting. By F. Dye. 12" i.oo 

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



12" 40 



Hot-Water Fitting and Steam Cooking Appa- 

 ratus. By F. Dye. 16° 50 



Pump Fitter's Guide. By J. Eldridge. 



Strength of Beams under Transverse Loads. 

 Professor W. Allan. 18°.... .... 



Ventilation of American Dwellings. By David 

 Boswell Reid, M.D. 12° i 



Ventilation of Buildings. By W. F. Butler. 18° 



ASXRONOmV AND NAVIGATION. 



By 



Astronomy for Beginn 



16°. 



By Francis Fellowes. 



Les=ons i 



Elementary. By R. A. 



ich Telescope. By Capt. 



'iation of the Compass, 



Astronomy, 

 Proctor. 



Hours with a Three-In( 

 William Noble. S^.. 



Magnetism and the De 

 By John Merrifield. 



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

 dents. By John Merrifield. 12° 



Sea-Rouths, 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. 



Experimental Chemistry for Junior Students. 

 By J. E. Reynolds. 



Part I. Introductory 



Part II. Non-Metals 



Part TIL Metals 



Part IV. Chemistry of Carbon Compounds, or 



Organic Chemistry 



Faraday's Chemistry of a Candle. 16° 



Practical Chemistry ; the Principles of Qualita- 

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

 Practical Inorganic Chemistry, An Introduction 

 to ; or The Principles of Analysis. By William 



Jago. 8° 



Practical Organic Analysis, An Introduction to. 



By George E. R. Ellis. 8° 



Qualitative Analysis and Laboratory Practice, 

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



tison Muir. 12° 



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- 



Quantitative Chemical Analysis. By T. E. 



Thorpe. iB° 



Tables for the Analysis of a Simple Salt for Use 



in School Laboratories. By A. Vinter. 8" . . . , 



EBUCATION. 



British and American Education. By Mayo W. 



Hazeltine. 32° I 



Culture of the Observing Faculties. By Rev. 



Warren Burton. 16° 



Library, The. By A. Lang. With a Chapter on 



Modern Illustrated Books, by Austin Dobson. 



Mahaffy'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 



E;iiECTRICIT¥. 



Alternate Current Machinery. By G. Kapp. 



18".... 



Chemistry of the Secondary Batteries of Plants 



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

 Dynamic Electricity. By John Hopkinson, J. A. 



Schoolbred, and R. E. Day. i8<* 



Dynamo-Electric Machines. Recent Progress in. 



By Professor Sylvanus P. Thompson. iS**. . . . 



Electric Bells. By F. C. Allsop. 12" 



Electric Lighting from Central Stations. By G. 



Forbes 



Electricity, Supply of, by Local Authorities. 



By K. Hedges. S" 



Electro-Magnetic Telegraph, A Hand-Book of 



the. By A. E. Loring. 18° 



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



C. J. Wharton 



Electro-Telegraphy. By F. S. Beecher. 16".. 

 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. i8« . . . . 

 Coils : How Made and How Used. 



18° 



Terrestrial Magnetism and the Magnetism of 

 Iron Vessels. By Professor Fairman Rogers. 

 18"^ 



ThermotElectricity. 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° 



Boiler 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, Pracrical Treatise on the Properties of 

 Continuous. By Charles Bender, C.E. 18°.. 



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, 

 CE. 180 



Foundations. By Professor Jules Gaudard, C.E. 

 Tr. from the French. 18° 



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

 iS'^*. . 



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

 is appended the Value of Artificial Fuel as 

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

 18° 



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

 son. iS*' 



Helicoiual Oblique Arches, Treatise on the 

 Theory of the Construction of. By John L. 

 Culley.CE. 18° 



High Masonry Dams. By John B. McMaster, 

 CE. iS-^ 



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

 ages. By A. B. Kempe 



Ice-Making Machines. From the French of M. 

 Le Doux. 18° 



Kinematics of Machinery. By Professor Ken- 

 nedy. With an Introduction by Professor R. 

 H. Thurston. 18^ 



Linkages ; the Different Forms and Uses of Ar- 

 ticulated Links. By J. D. C. De Roos. i8'>.. 



Maximum Stresses in Framed Bridges. By Pro- 

 fessor William Cain, C. E. 18° 



Metals and their Chief Industrial Applications. 

 ByC. 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. 

 18° 



Plate Girder Construction. By Isami Hiroi. 18" 



Practical Designing of Retaining Walls By 

 Arthur Jacob. A. B. 18° 



Proportions of Pins used in Bridges. By Charles 

 Bender, C.E. i3° 



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. iS** 



Safe' Y Valves. By Richard H. Buel, C.E. 18° 



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

 Ulus. 18" 



Stadia Surveying. The Theory of Stadia Meas. 

 urements. By Arthur Winslow, xS° 



STEAM-Boilor Explosions. By Zerah Colburn. 18° $1 



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

 W. B. LeVan. 18° 



Steam 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, C.E. 18° 



Testing-Machines, their History, Construction, 

 and Use. By Arthur V. Abbott. 18° 



Theory of the Gas-Engine, The. By Dugald 

 Clerk. iS° 



Topographical Surveying. By G. J. Specht, 

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

 and H. F. Walling. 18° 



Transmission of Power by Compressed Air. By 

 Robert Zahner, M.E. 18' .. 



Transmis. ion of Power by Wire Ropes. By Al- 

 bert W. Stahl, U.S.N. iS'' 



Turbine Wheels. By Professor W. P. Trow- 

 bridge. 18° 



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

 ley, M.E. 18° 



VoussoiR Arches, A Theory of. By Professor W. 

 E. Cain. 18° 



VoussoiR Arches applied to Stone Bridges, Tun- 

 nels, Culverts, and Domes. By Professor 

 William Cain. i&° 



Wheels, A Practical Treatise on the Teeth of. 

 By Professor S. W. Robinson. 18" 



miSCELLANEOUS. 



Graphic Method for solving Certain Algebraic 

 Equations. By Professor George L. Vose. 18* 



Leahy's The Art of Swimming in the Eton Style. 



Life History Album. By Francis Galton. 4° 



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



Polarisation of Light. By W. Spottiswoode. . . 



Record of Family Faculties. By Francis Galton. 

 4° • - 



Strehter s Great Diamonds of the World. 4° . . . 



NATURAI. HISTORir. 



Colours of Flowers, On the. As Illustrated in 



the British Flora. By Grant Allen 



Common Frog, The. By St. George Mivart 



Darwin, Charles. Memorial Notices reprinted 



from " Nature." By Professor Huxley 



Degeneration. By E. Ray Lankester 



Essays Selected from Lay Sermon^-, Addresses, and 



Reviews. By G. H. Huxley, LL.L' 



Griscom's Animal Mechanism. 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 Organic Evolution. By 



G. J.Romanes , 



Tales of the Birds. By W. Warde Fowler 



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



SANITARY SCIENCE. 



nd Ventilation. By Pro- 

 re" 



ByR. H. 



Air We Breathe, the, 

 fessor H. A. Mott. 

 Bad Drains, and How to Test then 



Dustbins and Sloppy Streets. By H. P. 



Bouln 



and Putrescent Air. By T- Rowan. 8°.. 



Drainage of Towns. By J. Phillips. 8° 



Dwelling-Houses : Their Sanitary Construction 



and Arrangements. By Professor W. H. Cor- 



field iS'' 



Fashion 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. &".. 



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

 son. S" 



Healthy Foundations for Houses. By Glenn 

 Brown. 18® 



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



House Drainage and S; 



P. Gerhard. i8« . . 

 Maternal Manaeemer 



and Disease 

 Pneumatic Dra 

 Potable Wat. 



Liy Plumbing. By W. 



imenV of 'Children in Health 



y Dr. Thomas Bull. 12® 



;e. By A. Smith. 8» 



the Different Methods of de- 

 tecting Impurities. By Charles W. Folkard. 

 iS" 



Sanitary Condition of Dwelling-Houses in Town 

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



Sanitary Drainage of Buildings. Notes embodying 

 Recent Practice in, with Memorand i on the 

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

 C.E. 18° 



Sanitary Protection. By W. Pany. 8° 



Sanitary Works Abroad. By R. Manning. 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° 



Sewerage and Sewage Utilization. By Professor 

 W. H. Corfield. 18° 



Shone Sewerage System, By E. Ault. 8" 



Storage of Water. By J. B. Denton. "~ 



Ventilation, Mechr '" "- '^-- 



ter.C. E. 18° .. 



Water and Water Supply. 



of. By George W. Raf- 

 By Professor 'w!'h. 



