Netherlands. 301 



(2) Album, -with different Photographs of exhibits relating to the Fisheries, from the Exhibi- 

 tion at Berlin, 1873, entitled : Erinnerung an die Erste Austellung von Gerathsschaften und 

 Produkten der See-und Binnenfischerei in Berlin, 1873." (3) "Erinnerung an die Inter- 

 nationale Fischerei Ausstellung zu Berlin im Jahre 1880." (4) A Dutch paper entitled : " Is 

 the Contract between the States on the Kiver Rhine concerning the Common Regulations of 

 the Rhine Fisheries Advantageous for the Netherlands?" A question answered by Francois 

 P. L. Pollen, 1870, 8, 32 pages. The German translation has been published in Circular 

 No. 3, 1871, pag. 19-33, of the Deutsche Fischerei- Verein at Berlin. 



77. ROYAL COMMISSION OF SEA FISHERIES. (1) The 

 yearly reports concerning the Netherlands Fisheries, drawn up by the Royal Commission of 

 Sea Fisheries since 1857. (2) Diagrams, Curves and Statistical Tables concerning the state 

 and the progress of the Netherlands Fisheries. 



78. GREVENSTUK, A., Calligrapher, Amstersdam. Drawing repre- 

 senting the fishes, the fish-markets in the principal towns and fishermen's costumes of the 

 Netherlands. 



ROYAL DUTCH METEOROLOGICAL INSTITUTE, Utrecht. 

 This Exhibit is placed under 389, Great Britain, Division IX. (1) A Set of Papers concern- 

 ing Herring Fisheries compiled from observations of fishermen by the Royal Dutch Met. 

 Institute. (2) Instruments, &c., for Forecasts of the Weather and for Storm "Warnings, 

 The Aeroclinoscope (Model) ^j. This instrument has been erected in the seaports of the 

 Netherlands on a place visible to ships in the Roads, for showing to captains the direction in 

 which the observing Stations with highest and lowest barometrical pressure respectively lie, 

 and the amount of difference between these two places at 8 a.m. This will enable them to 

 make the prognostics of the expected wind and weather themselves, by means of the Law 

 regulating the connection between barometer difference and wind, This law, generally called 

 the " Buys' Ballot " Law, because Professor Buys Ballot, the Superintendent of the Royal 

 Dutch Meteorological Institute at Utrecht, found it after long researches, states : " The air 

 moves around the place with lowest barometer pressure from right to left on the Northern, and 

 from left to right on the Southern hemisphere." An observer placed in the line between the* 

 two places with highest and lowest barometer pressure, and looking towards the latter, will 

 have the wind from the left hand in the Northern hemisphere, and from the right hand in the 

 Southern. This law was first communicated by Professor Buys Ballot ;to the meeting of the 

 Royal Academy of Science at Amsterdam in October, 1857, and published in the annals of the 

 Met. Institute of 1858, and in several foreign scientific papers. Since that date it was gene- 

 rally known, as can be shown from the U.S. Senate Papers, Fifth Congress, May 6th, 1858, 

 when the questions about Meteorological Researches in the Lake districts were discussed. Upon 

 this law are based all the weather charts and storm warnings from the several Met. offices irt 

 the present time. The system still used in the British Isles of giving warning of probable 

 storms or strong winds by hoisting cones or drums in the seaports, was abandoned in Holland 

 fifteen years ago, because it seemed more practical to induce captains to make the prognostics 

 themselves. The ^Eroklinoscope itself consists of an iron pole, having a balance-shaped 

 cross-beam at the top, which can be moved in the vertical plane by a long iron rod fixed at the 

 end of the cross-beam. This iron pole is fixed to a wooden one, and can be turned round its- 

 own axis by a handle at the lower end in order to put the cross-beam in the direction of the 

 observing places with highest and lowest barometer pressure, while an inclination is given to 

 the cross-beam, according to the amount of barometric difference between these two places. 

 A red-painted globe of iron frame-work hangs on the northern arm of the cross-beam to 

 distinguish it from the southern when at a distance from the instrument. (3) Wooden Case- 

 for Weather Reports (Model J). This case is an appendage to the seroklinoscope. For those 

 captains who might like to investigate the question, the readings of the barometer and ther- 

 mometer, direction and force of the wind, on the three last days at the principal places of 

 Europe, are exhibited every day close to the instrument, thus giving a general view of the 

 movements of the atmosphere over Europe. (4) A set of instruments as provided to ships in 

 general, as : One mercurial Barometer ; one Aneroid Barometer ; one Psychrometer (dry 

 and wet bulb Thermometers); three Thermometers for Surface Temperature; one set of 

 Hydrometers. 



ANDERSON, ABBOTT, AND ANDERSON 



ARE THE MANUFACTURERS OP THE 



AXfclttY XfcEOTJLA.TIO]%r VALISE. 



37, Queen Victoria St., London, B.C. Works : Limehouse. 



Messrs. ANDERSON, ABBOTT & ANDERSON, [COPY.] HORSB GUARDS, 11th June, 1871. 



The Valise made by your firm has been found well suited for the conditions proposed, viz., to 



enable an officer to carry the articles absolutely required for service ; and the waterproof sheet 



answers as a bed ; the whole, fittings Included, not exceeding forty pounds weight. The pattern 



has been deposited at the Horae Guards for inspection. ARTHUR HERBERT, A.A.G., Col. 



