260 Notices of Boohs. [April, 



learnt from prolonged experience what the student exactly 

 needs. The synoptical tables for the detection and qualitative 

 separation of the elementary bodies, when occurring in com- 

 pounds or mixtures, are well arranged. The student who can 

 give a correct: reply to the questions contained in the last section 

 will have laid a firm foundation, and will be well prepared for 

 turning his attention to the higher departments of the science. 

 We can therefore confidently recommend this Manual, both to 

 students and to teachers of chemistry, as an excellent syllabus 

 for a practical course of instruction. 



The General Glaciation of jfar-Connaught and its Neighbourhood, 

 in the Counties of Gal way and Mayo. By G. H. Kinahan, 

 M.R.I. A., Of the Irish Branch of the Geological Survey of 

 the United Kingdom ; and M. H. Close, M.R.I. A. Dublin : 

 Hedges, Foster, and Co. 1872. 



The mapping of both kinds of the glacial phenomena considered 

 in this pamphlet was commenced seven years ago by Mr. G. H. 

 Kinahan, and was carried on during the course of his work on 

 the Geological Survey. The pamphlet may be said to include 

 a complete view of the glaciation of the district, although many 

 admirable notices and descriptions have appeared from the pen 

 of Prof. King, Messrs. Ormsby and Campbell, and others. 



Signal Service U.S. Army : Telegrams and Reports for the Benefit 

 of Commerce and Agriculture. Published by Order of the 

 Secretary of War. 



"They do these things better abroad," is as true of meteorology 

 as of many other instances of perhaps more personal moment. A 

 vast number of observations have been shown by Mr. Norman 

 Lockyer to be necessary to the determination of a weather-cycle, 

 and it may be considered probable that the nation first achieving 

 a collection of these data will be the first to make a decisive step 

 in meteorological science. If this hold goods, America certainly 

 appears the country to which the honour will accrue. We have 

 received a copy of these telegrams published during one day by 

 the U.S. Army Signal Service, accompanied by two weather 

 maps. The telegrams give (for seventy-three stations) the 

 height of the barometer, the change in the last eight hours, the 

 temperature and change in the last twenty-four hours, relative 

 humidity, the direction, velocity, and pressure (in the per square 

 foot) of the wind, the amount and direction of upper and lower 

 clouds, the rain-fall, and the state of weather at each station. 



