WILLIAMS & NORGATE'S 



PHILLIPS(FRANCISC.). METHODS FORTHE ANALY- 

 SIS OF ORES, PIG IRON AND STEEL. Second 

 Edition. 8vo. Pages viii + 1 70. 3 Illustrations. 4.$-. 6d. net. 



PIDDINGTON (HENRY). THE SAILORS' HORN-BOOK 

 FOR THE LAW OF STORMS. Being a Practical Exposi- 

 tion of the Theory of the Law of Storms, and its uses to Mariners of 

 all Classes in all Parts of the World. Shown by transparent Storm 

 Cards and useful Lessons. 7th Ed. Demy 8vo, cloth, los. 6d. 



PRAY (Dr.). ASTIGMATIC LETTERS. Printed on Mill- 

 board, size 22 by 14 inches, u. 



PROCEEDINGS OF THE OPTICAL CONVENTION, 

 No. I, 1905. Crown 4to, cloth. IQS. net. 



RANSOM (W. H., M.D., F.R.S., F.R.C.P.). THE IN- 

 FLAMMATION IDEA IN GENERAL PATHOLOGY. 



Demy 8vo, cloth. 7^. 6d. 



RAY (Prof. P. C). A HISTORY OF HINDU CHEMISTRY 

 FROM THE EARLIEST TIMES TO THE MIDDLE 

 OF THE SIXTEENTH CENTURY A.D. With Sanskrit 

 Texts, Variants, Translation, and Illustrations. Vol. I. Second 

 Edition, Revised and Enlarged. Crown 8vo. IO.T. 6d. net. 

 Vol. II. Cloth. ioj. 6d. net. 



SANG'S LOGARITHMS. A new Table of Seven-place Loga- 

 rithms of all Numbers continuously up to 200,000. 2nd Edition. 

 Royal 8vo, cloth, zis. 



SCHREBER (D. G. M.). MEDICAL INDOOR GYMNAS- 

 TICS, or a System of Hygienic Exercises for Home Use, to be 

 practised anywhere, without apparatus or assistance, by young and 

 old of either sex, for the preservation of health and general activity. 

 Revised and Supplemented by Rudolf Graefe, M.D. With a 

 large plate and 45 illustrations in the text. Royal 8vo, cloth. 

 $s. net. 



"The exercises described, when efficiently used, will undoubtedly be of value 

 in strengthening and developing the muscular system. The descriptions of the 

 exercises and the figures in the text are excellent." Physician and Surgeon. 



"Well worthy of the attention of those who go in for regular physical train- 

 ing as a means for the preservation of health." Scotsman. 



"A very sensible little treatise." Glasgow Herald. 



SCHROEN (L.). SEVEN-FIGURE LOGARITHMS OF 

 NUMBERS from i to 108,000, and of Sines, Cosines, 

 Tangents, Cotangents to every 10 Seconds of the Quad- 

 rant. With a Table of Proportional Parts. By Dr. Ludwig 

 Schroen, Director of the Observatory of Jena, etc., etc. 5th 

 Edition, corrected and stereotyped. With a description of the 

 Tables by A. De Morgan, Professor of Mathematics in University 

 College, London. Imp. 8vo, cloth, printed on light green paper. 



14 Henrietta Street, Covent Garden, London, W.C. 



