I. SPECIAL COLLECTIONS. 675 



2787. Meteorological Instruments, set, for the use of 



colleges and public schools. Francis Pastor till. 



These instruments when compared with the standards at the Kew Obser- 

 vatory will be found to be within the error permitted by that institution. 



They consist of a comparative standard barometer, maximum and minimum 

 thermometer, wet and diy bulb hygrometer, terrestrial radiation thermo- 

 meter, solar radiation (in vacuo) thermometer, rain gauge and graduated 

 measure. 



2788a. Special set of Observatory Standard Meteoro- 

 logical Instruments. Negretti and Zainbra's special selection 

 of standard meteorological instruments for a first class observatory 

 station, consisting of : Standard barometer, Negretti and Zambra's 

 patent maximum thermometer, Rutherford's minimum, thermo- 

 meter, Negretti and Zambra's patent mercurial minimum thermo- 

 meter, hygrometer, wet and dry bulb, Negretti and Zambra's 

 patent solar radiation thermometer, terrestrial radiation thermo- 

 meter, Robinson's anemometer, rain-gauge (Glaisher's pattern). 



JXegretti and Zambra. 



2788. Specimens of Meteorological Instruments, supplied by 

 the Meteorological Office to the Royal Navy : 



Xew-pattern Marine Barometer, iron cistern, tube protected 

 with India-rubber packing against damage by concussion from 

 gun-firing, &c. ; by Adie, marked A 430 ; certificate of Kew 

 verification in box. Glass tube and packing, as fitted to the 

 above barometer. 



Pair of Thermometers, maximum /p A 369, and minimum^ 



A 394 ; constructed specially for use at sea in chronometer-rooms, 

 by Hicks. Certificates of verification in box. 



Aneroid, compensated for temperature, marked Elliott, A 421. 



N.B. The thermometers, screen, and hydrometers supplied to 

 Her Majesty's ships are of the same pattern as those lent to mer- 

 chant ships, Nos. 2777-79. 



Portable Instruments used by Admiralty Surveyors : Pocket 

 Aneroid, compensated, Casella/p 6 (548). 



Pocket Thermometer, mounted in boxwood, in leather case, 

 Casella, No. 13. 



Portable thermometer (thermometre fronde), in padded tin 

 case, Hicks, B. T. 499; to give the temperature of the air when 

 whirled round at the end of a string. Meteorological Committee. 



2789. Specimens of Instruments used at Stations of the 

 Meteorological Office : 



Barometer, used at Coast Stations as a weather-glass, by Hicks, 

 M. 0. 143. 



Uu 2 



