August i, 1890.] 



SCIENCE. 



LOW-PRICE_D BOOKS. 



Any of the following low-priced books will be 

 mailed postpaid on receipt of price. 



SCIENCE BOOK AGENCY, 



47 Lafayette Place, New York. 



AGRICUIiTUKE. 



Agricultural Drainage. By J. B. Denton. 8°. $1.20 



Animal Food Resources of Different Nations. By 



P. L. Simmonds. 12° i.oo 



Armstrong's Agriculture. 18® 75 



British Wild-Flowers Considered in Relation to 



Insects. By Sir John Lubbock 1.25 



Coffee 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° : i-SO 



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

 bock 1-25 



Flowers, The Colours of. By Grant Allen. 12° 1.00 



Fruits, Selected : Their Culture, Propagation, 

 and Management in the Garden and Orchard. 

 ByC.Downing. 12° i.SO 



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. 12° 1.25 



Horticulture, The Theory of ; or, An Attempt 

 to e.\plain Gardening upon Physiological Prin- 

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

 12° I-5C 



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



By P. L. 



AKCHITECXCRE AND BIIIE.DING 

 CONSTRCCTION. 



BUIL 



Stepping-Stone to. By 

 Kitchen. By ii. '( 

 By Edward J. Burrell. 



Architecture, the 

 Thomas Mitchell. 

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



EDUCATION. 



Warn 

 Library, 



Mode 

 Mahaffv 

 Manches 



By Mayo W. 

 By Rev. 



Chimneys for Furnaces, Fireplaces, and Steam- 



Boilers. By R. Armstrong, C.E. 18° 



Cooking Range, The. By F. Dye. 12° 



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



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



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

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



Hot-Water Fitting and Steam Cooking Appa- 

 ratus. By F. Dye. 16° 



Pump Fitter's Guide. By J. Eldndge. 12° 



Strength of Beams under Transverse Loads. By 

 Professor W. Allan. 18° 



Ventilation of American Dwellings. By David 

 Boswell Reid, M.D. 12° i 



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



ASXKONOraV AND NAVIGATION. 



ners. By Francis Fellowes. 



in Elementary. By R. A. 



:-Inch Telescope. By Capt. 



8° I 



of the Compass, 



Astronomy for Begi 



16°. 

 Astron 



Les=< 



Hours with a Th 

 William Noble 



Magnetism and the De 

 By John Merrifield. 



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

 dents. By John .Merrifield. I2° 



Sea-Routes, 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. 



Students. 



Experimental Chemistry for Ju 

 By J. E. Reynolds. 



Part I. Introductory 



Partll. Non-Metals 



Part III. 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. Elhs. 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. rs" 



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. By A. Vinter. S" 



British and American Educ; 



Hazeltine. 32** 



Culture of the Observing Facultit 



n Burton. 16° 



The. By A. Lang. With a Chapter on 

 -n Illustrated Books, by Austin Dobson. 



's Old Greek Education. 16° 



TER 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 



EliECXRICITX. 



Alternate Current Machinery. By G. Kapp. 



18° 



Chemistry of the Secondary Batteries of Planti 



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

 Dyna.mic 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. AUsop. 12° 



Electric Lighting from Central Stations. By G. 



Forbes 



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.Wharton , 



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



\ndescent Electric Lights, with Particular 



Reference to the Edison Lamps at the Paris 



Exhibition. By Comte Th. Du Moncel, W. 



H. Preece, J. W. Howell, ' ' 



uction Coils 



18° 



:restrial Magnetism and the Magnetism of 



Iron Vessels. By Professor Fairman Rogers. 



^ith in Coal-M!i 



By J. J. Atkii 



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. iS" 



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. iS° 



Bridges, Practical Treatise on the Prope 

 Continuous. By Charles ~ ' ~ " 



Cable-Making of Suspensi 

 Hildenbrand, C.E. iS". 



Compound Engines. Tr. fro 



Mallet. 18° 



Flow of Water in Open Channels, Pipes, Conduits, 

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

 C.E. 18°. 



Foundations. By Professor Jules Gaudard, C.E. 

 Tr. from the French. iS° 



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



r, C.E. 18°.. 

 Bridges By W. 



the French of A. 



STEAM-Boilor Explo.._ . , _ 



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

 W. fi. 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. 18° 



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° 



Transmission of Power by Wire Ropes. By Al- 

 bert W. Stahl, U.S.N. 18° 



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. 18° 



Wheels, A Practical Treatise on the Teeth of. 

 By Professor S. W. Robinson. 18° 



OTISCEIiIiANEOUS. 



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. 



:l. By C. William Siemens, D.C.L.; to which 

 is appended the Value of Artificial Fuel as 

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



Gases 



Helicoiijal Oblique Arches, Treatise on the 

 "Theory of the Construction of. By John L. 

 CuUey, 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 Doux. 18° 



Kinematics of Machinery. By Professor Ken- 

 nedy. With an Introduction by Professor R. 

 H.Thurston. t8° 



Linkages ; the Different Forms and Uses of Ar- 

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



Maximum Stresses in Framed Bridges. By Pro- 

 fessor William 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. 

 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. 18° 



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° 



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



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



Illu 



Stadia Surveying. The Theory of Stadia Meas- 

 By Arthur Winslow. 18° 



Streeter's Great Diamonds of the World. 4° . . . 

 NAXCRAli HISTORY. 



Colours of Flowers, On the. As Illustrated in 



the British Flora. By Grant Allen 1 



Common Frog, The. By St. George Mivart 



Darwin, Charles. TNIemorial Notices reprinted 



from " Nat^re." By Professor Huxley 



Degeneration. By E. Ray Lankester 



Essays Selected from Lay Sermons, Addresses, and 



Rev.ews. By G. H. Hu.xley, LL.D 



Griscom's Animal Mechanism. iS° 



Origin and Metamorphoses of Insects, On the. By 



Sir John Lu'obock 



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

 ie's N -tural History of Quadrupeds. iS° . . . 

 Scientific Evidences of Organic 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. 



DiKTY Dustbins and Sloppy Streets. By H. P. 

 Boulnois. 12° 



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



Dr.ainage of Towns. By J. Phillips. 8° 



DwELLlNG-HousES : Their Sanitary Construction 

 and Arrangements. By Professor W. H. Cor- 

 field. 18° 



f ASHION 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 Health 

 and Disease. By Dr. Thomas Bull. I2° 



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. iS°. 



Sanitary Drainage of Buildings. Notes embodying 

 Recent Practice in, with Memorandi on the 

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



C.E. 



Sanitary Protection. By W. Parry. 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. 8° 



Ventilation, Mechanics of. By George W. Raf- 



,C. E. 18° 



Water' and Water Supply. By Professor W. H. 

 Corfield. 1^ 



