OR ROCK-THERMOMETERS, AND OTHERS. 
EXTRANEQUS OBSERVATIONS, ALL OF THEM BEING CLEARED OF THE EFFECTS OF THE ANNUAL DIFFERENCES OF SUMMER AND WINTER. 
1852 
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7 
LI | c cE 1872 | 1873 | 1874 a 1876 }| 1877 | \878 | 1879 | Isso | i881 | Iss2 eee 
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FGHUENESAGSONEIOGS! \EN0ORNNOSEAMNGUORKMERT ONNOE | | ALT Tsun seons| [es 
| WY |S ¢, algal 4 its spefoJonte i 260} Bes | Sins 
pitt | - x Se, i ! SCHWABES NUMBER| =S | = 
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iz | 1853 
ite ena dics 
1354 
NU LI 
winds CYT Noi owes 
+! or 25:6 BRIT.|FOOT DEEP THERM: 
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13. £2 on 12:8 BRIT FOOT DEEP THERM® 
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4 op 3-2 BRIT.|FOOT DEEP THERM™ 
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1860 1861 
1862 | 1863 
1864. 
1865 
1866 | 1867 | 1868 
1869 | 1870 1871 
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1872 1873 
1874 
1875 
THE REMAINING ROGK-THERMOMETERS, BROKEN 
1876 
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(877 | 1878 | 1879 | 1880 | I88l | 1882 pee DATE 
W&A K Jolmston Edinburgh & Touden: 
