B. TERRESTRIAL PHYSICS AND METEOROLOGY. 71 



number of persons upon the works that it has undertaken, 

 and the director states that the publication of the weather 

 charts of the North Atlantic will be possibly achieved within 

 two years ; that, in fact, the small means at his disposal has 

 required that too large a proportional amount of labor should 

 be given to the current work of the office, and that the mass 

 of material now on hand already surpasses his ability to 

 reduce to a form proper for publication. He anticipates 

 that when all the observations have been entered upon the 

 charts, he will be able to designate the details of the weath- 

 er, for each square of one degree in latitude and longitude, 

 with a minuteness that has not as yet been attempted by the 

 charts in current use. Full attention will be given to the 

 winds, the temperatures, and the currents, the tracks of ves- 

 sels, and -sailing directions for the various routes of the North 

 Atlantic Ocean. Of the forty-eight sheets that will comprise 

 the entire chart, four sets of charts have already been sent 

 to press, and the whole will cover the belt of the Atlantic 

 Ocean between the longitude of Greenwich and 100 west, 

 and from the equator to 60 north. The winds and currents, 

 as published by him, are taken only from the records of sail- 

 ing-vessels ; the temperature of the water from the records 

 of all classes of vessels. He cites it, as a satisfactory demon- 

 stration that the German navigators employ the most ration- 

 al methods in the conduct of their vessels, that, on all the seas 

 and in all the voyages, the German ships have, on the aver- 

 age, excelled their companions in rapidity. The Hamburg 

 Institute receives storm-warning dispatches from the Meteor- 

 ological Office in London, and displays storm-signals similar 

 to those in use throughout Great Britain. Sixth Annual 

 Report N. Ger. Naut. Inst., 1873. 



SIGNALS OF THE LONDON BOARD OF TEADE. 



The London Board of Trade announce, in behalf of the 

 Meteorological Committee, that on and after March 15, 1874, 

 they propose to reintroduce the use of Admiral Fitzroy's sig- 

 nals of cones and drums. A cone exhibited with the point 

 downward indicates the approach of a southerly gale, south- 

 east round by south to northwest; a cone pointing upward 

 indicates a northerly gale, northwest round by north to south- 

 east; a drum with cone indicates the probable approach of a 



