673 



SECTION 14. METEOROLOGY. 



WEST GALLERY, GROUND FLOOR, ROOM L. 



, I. SPECIAL COLLECTIONS. 



METEOROLOGICAL INSTRUMENTS, A SET AS LENT TO CAPTAINS 

 OF MERCHANT SHIPS, COMPRISING : 



2776. Board of Trade Marine Barometer, Kew pattern ; 

 the best barometer yet devised for use at sea, serviceable also as 

 a station barometer; by Adie, marked B.T. 12; certificate of 

 Kew verification in box. 



2777. Board of Trade Marine Thermometers. Set of 



six, Kew pattern ; one for sea-water, in copper case, one for air, 

 and one for evaporation temperatures, with three spare to replace 

 breakages; by Casella, marked B.T. 1720 to 1725; certificate of 

 Kew verifications in box. 



2778. Board of Trade Thermometer Screen, for " dry- 

 bulb "and " wet -bulb " thermometers, with water-cup. For use 

 on ship board. 



2779. Board of Trade Marine Hydrometers. Set of 



four; by Casella, marked B.T. 610, 620, 630 ; for testing the 

 specific gravity of sea-water; by Hicks, A. 170, for the denser 

 ^yater of the Suez Canal ; certificate of Kew verifications in box. 



2780. Board of Trade Prismatic Azimuth Compass, in 



box. This instrument is lent only in a few special cases. 



2781. Meteorological Register, for observers using the 

 above instruments at sea. 



2782. Hough Register, for use at sea. The observations 

 should be entered at the time of making them, and afterwards 

 copied into the preceding register. 



Meteorological Committee of the Royal Society. 



2783. Equipment of a Second Order Station, approved 

 by the METEOROLOGICAL SOCIETY, consisting of the following 

 instruments : 



STANDARD BAROMETER. 



THERMOMETER STAND, containing DRY BULB THERMOMETER, 

 WET BULB THERMOMETER, MAXIMUM THERMOMETER, and MINI- 

 MUM THERMOMETER. 



40075. U u 



