RECORD AND DISCUSSION OF TEMPERATURES. 



41 



Readings of the Black Bulb Thermometer, and corresponding Notes on the Solar Light, 



OBSERVED AT VaN ReNSSELAER HarBOR, 



In April, 1854, in Lat. 18° 31', Long. 10° 53' W. of Greenwich. 

 Expressed in degrees of Fahrenheit's scale. At meteorological observatory. 



lOth. 



13th. 



Ill- 

 2 



3 



4 



5 



6 



7 



8 



9 

 10 

 11 



Noon 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 Midn't 



4.0 

 4.0 

 2.0 

 0.5 

 1.0 



+ 2.0 

 + 1.8 



— 0.6 



— 1.5 



— 2.0 



— 2.5 

 §—7.5 

 —10.0 



— 9.0 



— 7.0—17.0 



— 6 O!— 10.0 

 + 5.0— 6.0 

 +10.0 — 2.0 

 + 6.0*4-1.0+ 6.2 

 ^10.0+ l.Ol 6.0 



1+10.0+ 2.0i 12.0 

 + 4.0+ 2.3 

 + 1.8+ 5.0 

 + 2.0+ 7.0' 

 + 3.5'+ - ~ 

 + 5.0 + 



— 8.0 — 



— ii.o'— 



—18.0 

 —20.5 



10.0 

 12.0 

 10.0 



8.0' 9.0 



7.0+ 8.0 



1.0 



1.9 



3.6 



16th. 17th. 18th. 19th, 



+ 1- 



16- 

 12. 

 12 

 12. 

 tl5. 

 ? 



25. 

 25, 

 20. 

 20. 

 16, 

 14 

 + 5, 

 



0. 

 0+5. 



—10.0 



26, 

 24, 



22. 



5' 20 







6- 

 4, 

 + 4 



—10. 



— 2. 



+ 

 + 5. 

 +10 

 +11 

 + 6 

 +14 

 + 8 



+1 

 +10 



+ 9 



— 2 



— 3 



— 4, 



1. 

 + 9. 

 + 10. 



4- 

 + 4. 

 + 5 

 +14, 



+11 



+24, 



+12 



+15 



+18 



+15 



+15 



+ 



+ 3 



— 4, 



— 5 



20lh. 



+ 4. 

 — 4.0+ 2. 

 0.0+12. 

 + 8.0 ? 

 +12.0 ? 

 + 8.0+20, 

 +14.0;+17, 

 + 9.0)+ 4, 

 +25.0+18, 

 +16.0i+2G, 

 +25.0+18 

 +22.0 +17 



+20.0 

 +17.0 

 + 7.0 



—13.9 



4.0 

 3.0 

 4.0 

 4.5 



+15, 

 +14, 

 +14, 

 +11 

 + 



3 

 — 3 



0— 8.0 

 0— 1.0 

 0+ 5.0 

 0+14.0 

 + 7.0 

 +16.0 

 0+22.0 

 0+13.5 

 0+24.0 

 0'+17.0 

 +27.0 

 +30.0 

 +33.0 

 0+28.0 

 2+22.0 

 0+ 9.0 

 0+ 8.0 

 0-1- 2.0 

 .2 

 



+ 8 



7. 



13. 



13. 



16. 



21. 



20, 



23, 



30, 



21, 



14, 



13, 



6, 



3, 



+ 1 

 0, 



2ith, 



+1.0 



2.0 



3.0 



7.0 



8.0 



15.0 



15.0 



19.5 



27.0 



23.0 



24.0 



20.0 



14.0 



9.5 



2.0 



+ 3.0 



10th. 



11th. 



Ih. 



2 



3 



4 



5 



6 



7 



8 



9 

 10 

 11 

 Noon 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 Midn't 



3 

 3 

 3 

 3 



4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 



3 

 4 

 4 

 4 

 1 

 1 

 2 

 2 

 2 

 2 

 2 

 2 

 1 

 1 

 1 

 1 



12th. 



1 

 1 

 1 

 1 

 1 

 1 

 1 

 1 

 1 

 1 

 1 

 2 

 2 

 3 

 3 

 4 



13th. 



4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 



l|4 

 l|4 

 4 

 4 

 114 

 4 

 4 

 4 

 4 

 4 

 4 

 4 

 4 



17th 



2 

 2 

 4 



114 

 114 

 114 

 114 

 114 



19th. 20th 



1 

 1 

 1 

 1 

 1 

 1 

 1 

 1 

 1 

 1 

 1 

 1 

 1 

 1 

 1 

 2 

 3 

 3 

 3 

 3 

 4 



21st, 



22d. 



23d. 



1 

 1 

 1 

 1 

 1 

 1 



2 

 1 

 1 

 2 

 2 

 2 

 2 

 2 

 3 

 3 

 4 

 4 



4 

 ? 

 2 

 2 

 2 

 2 

 1 

 1 

 1 

 1 

 1 

 2 



1 

 1 



2«h. 



* Corrected from 10^ to 1°.0. t ^ the original, it has the sign -. 



t Changed from 5 to 15. § Corrected reading, the original being 9 . 



II The original has ; the column for clouds indicates 4, as above. 



NoTE.-The observations are made with mercurial thermometer No. 1 ; by comparison with the observatory 

 standard at +42°, its correction was -OM. It was not thought necessary to apply this small correction. 



