JAMES WALTON, 



antJ Publisher to 3Enitottg College, 



137, GOWER STREET. 



Natural Science. 



THE ELECTRIC TELEGRAPH. By DR. 



LARDNER. New Edition. Revised and re-written by 

 E. B. BRIGHT, F.R.A.S., Secretary of the British and 

 Irish Magnetic Telegraph Company ; containing full 

 information, in a popular form, of Telegraphs at 

 home and abroad, brought up to the present time ; in- 

 cluding Descriptions of Railway Signalling Apparatus, 

 Clock Regulating by Electricity, Admiral Fitzroy's System 

 of Storm Warning, &c. 140 Illustrations. Small Svo, 53. 

 " It is capitally edited by Mr. Bright, who has succeeded in making 

 this one of the most readable books extant on the Electric Telegraph. 

 On the ground it takes up it is quite exhaustive ; and he who will care- 

 fully read the work before us, and can retain its chief facts in remem- 

 brance, may well be considered thoroughly posted up in all that 

 appertains to the Electric Telegraph to date." Rnglish Mechanic. 



HANDBOOK OF ASTRONOMY. By DR. 



LARDNER. Third Edition. Revised and completed to 

 1867. By EDWIN DUNKIN, F.R.A.S., Superintendent 

 of the Altazimuth Department, Royal Observatory, Green- 

 wich. 138 Illustrations. Small 8vo., 75. 6d. 

 " It is not very long since a lecturer was explaining some astronomical 

 facts to his pupils ; and in order to set the matter clearly before them, he 

 referred to more than one large and important volume on the subject, 

 but without a decidedly satisfactory result. One of the pupils, however, 

 produced from his pocket a small unpretending work (Dr. Lardner's 

 Handbook], and that which a lengthy paragraph in the large work had 

 failed to make clear, was completely elucidated in a short pithy sentence 

 in the small book. A Third Edition of the well-known Handbook 

 of^Astronomy is now before us, edited by Mr. Dunkin of the Green- 

 wich Observatory, who has added to the text all that has lately been 

 discovered, so as to bring the work down to the present time. We 

 can cordially recommend it as most useful to all those who desire to 

 possess a complete manual of the science and practice of astronomy in 

 a portable and inexpensive form." Astronomical Reporter. 



NATURAL PHILOSOPHY FOR SCHOOLS. 



By DR. LARDNER. 328 Illustrations. 4th Edit, i Vol. 33. 6d. 



'This will be a very convenient class-book for junior students in 

 private schools. It is intended to convey, in clear and precise terms, 

 general notions of all the principal divisions of Physical Science, illus- 

 trated largely by diagrams. These diagrams exhibit the forms and 

 arrangement of apparatus, and the manner of performing the most im- 

 portant experiments." British Quarterly Review. 



