652 



Meteorological Apparatus. 



No. 55 439 - 



55 441 B. 1:8. 



55 439. 1 : 5. 



55 441 A. 1 : 7. 



55 443. 1 : 6. 



55 444. 1 : 8. 



55 446. 1 : 10. 



55.439. Pyrheliometer after Pouillet, Figure, for showing the total amount of solar heat i s. d. 

 absorbed by the earth (M. P., Ill, Fig. 473 [II, 2, Fig. 340]; Gan.-Eein., Fig. 453) . 4.10.0 



55.440. Sunshine Recorder after Campbell-Stokes, for automatically recording the duration 

 of sunshine, with adjustable polar altitude, centering device and sensitive sheets for 

 one year's records 



54,888. Hypsometer after Wollaston, see Fig. 54,888, p. 580, with one thermometer No. 54,874a 



55.441. Hypsometer after Geissler, Figs. A and B, for altitudinal determinations from the 

 boiling point of water by means of thermometers, with lamp and boiler, in box . . 



The thermometer is divided in 1 /, from + 95 to + 102 C. 



55.442. idem, with large thermometer divided in 1 / 50 C 



55.443. Hygrometer after Daniell, Figure (M. P., 9 th Edn., II, 2, Fig. 352; W. u. E. 



phys. Prakt,, Fig. 102; Gan.-Man., Fig. 522; Gan.-Eein., Fig. 386) 



9. 0.0 



4. 3.0 



3. 5.0 



5. 0.0 



0. 15. 



55.444. Hygrometer after Dobereiner-Ke'gnault, Figure (W. u. E. phys. Prakt., Fig. 103; 

 Gan.-Eein.. Fig. 387), with two polished silver vessels and two thermometers divided 



m Vio> on brass stand, without aspirator 2. 10. 



55.445. - - idem, with simple aspirator of 5 litres capacity (M. P., Ill, Fig. 480 [II, '2, 



Fig. 353]) 3.10.0 



v> (10. Hygrometer after Be"gnault, Figure, with polished silver vessel for the ether, 



with extra-sensitive thermometer, in box s 4. 0. 



55,447. Hygrometer after Alluard, Figure, with accessories (Gan.-Man., Fig. 523) . 



4.16.0 



Cl. 1976, 1977, 1978, 

 1979, 1980, 1982. 



