HARD WICKE' S S CIENCE- G O SSIP, 



255 



one of which, the first, is very properly devoted to a 

 glossary of terms. The remaining chapters sever- 

 ally discuss the following subjects : — " The Electric 

 Circuit," " Magnetism," " Galvanic Batteries," 

 *' Electric Bells," "Electric Mining Signals," and 

 " Telephonic Apparatus." There are one hundred 

 and twenty-seven good illustrations ; the style of the 

 author is simple, without affecting to be too popular, 

 and there can be no question that this book will be 

 as well received as it was much needed. 



Lessons in Physiographic Astronomy ^hy John Mills 

 (London : Chapman & Hall). This is a handy and 

 well-illustrated little work, which all young students 

 will find very useful. 



Hygiene, by J. H. E. Brock ; Animal Physiology, 

 by J. H. E. Brock ; Magnetism and Electricity, by W. 

 Hibbert ; Buildittg Construction, by Hen. Adams ; 

 and Principles of Agriculture, by H. J. Webb 

 (London : Chapman & Hall). This is a series of 

 eighteenpenny cloth-bound brochures, in which are 

 given the solutions to the questions set at the May 

 examinations of the Science and Art Department for 

 several years past. They read very much like 

 examiners being examined, and consequently will be 

 very useful to the students intending to go in for 

 examinations on the subjects above mentioned. 



Manures and their Uses, by Dr. A. B. Griffiths 

 (London : Geo. Bell). This book, published at half- 

 a-crown, is one we cordially recommend to all con- 

 cerned in agricultural matters. No man has worked 

 more earnestly or more successfully at the subject 

 than its author. Indeed, Dr. Griffiths may be said 

 here to have made his mark. This little book is 

 practically on the art of manuring land, and in the 

 eleven chapters it contains we have copious and 

 even exhaustive details of the principles of manuring, 

 and of all sorts of manures, organic and artificial. Not 

 the least important part of the work is the instruction 

 given as to how and when to use artificial manures ; 

 for it is ignorance of these details which has fre- 

 quently caused them to be stupidly denounced. 



On the Creation and Physical Structure of the 

 Earth, by J. T. Harrison (London : Longmans). 

 This is a well got-up book, and contains a great deal 

 of original matter on the part of the author, who is 

 evidently very well read on most geological subjects ; 

 but whether geologists will accept his hypotheses 

 one can hardly say. At any rate, it is a book worth 

 reading. 



The Photographic Quarterly, edited by Chas. W. 

 Hastings (London: Hazell, Watson & Co.). We 

 are pleased to give this new venture a hearty greeting. 

 It is well printed on good paper, after the style of 

 the "Nineteenth Century," and published at eighteen- 

 pence. It contains eleven articles on various subjects 

 connected with photography by well-known writers 

 and workers, and two exquisitely got-up illustrations 

 — one a portrait of James Glaisher, F.R.S., and the 

 other a view of Salisbury Cathedral, 



ASTRONOMY. 

 By John Browning, F.R.A.S. 



IT is good news that Mr. Isaac Roberts, of Liver- 

 pool, who has been doing such excellent work 

 in taking photographs of the heavenly bodies, is 

 about removing to Crowborough Hill, Sussex. An 

 observatory can be placed here at a good elevation, 

 and well removed from the sea-fogs of the south 

 coast. 



Brooks's comet (d. 1889) is diminishing slowly in 

 apparent brightness, but may be visible in a telescope 

 of good aperture until the end of the year. 



The Rev. T. E. Espin, of Wolsingham Observatory, 

 has observed bright lines in the spectrum of R 

 Andromedse on 25th of September, the F line being 

 very bright. 



Very few records of observations of the interesting 

 conjunction of Mars and Saturn have yet been 

 published. Mr. Markwick, of Queenstown, Ireland, 

 observed it with the small aperture of 2f — a refractor 

 — but states that so long as he was able to observe 

 the conjunction, the planets were easily visible, quite 

 separate to the naked eye ; but at 5.25 clouds came 

 up and put an end to further observations. 



In November Mercury will be a morning star. 



Venus will be a morning star. 



Mars will be a morning star. 



Jupiter will be a morning star. 



Saturn will be almost stationary in Leo. 



There will be no eclipses, occultations, or other 

 celestial phenomena of interest during the month. 



Rising, Southing, and Setting of the Principal Planets 

 in November. 



