54 



Results of Makerstoun Observations, 1845. 



TABLE XXIII. — Extreme Readings of the Barometer for each Month in 1845 ; Extreme Daily I 

 Heights for each Month ; and Extreme Diurnal Ranges for each Month, together with the 

 Ranges and Means of the Extremes. 





Extreme Readings. 







Extreme 



Daily Means. 



Extreme Diurnal Ranges. 



Month. 



















Highest. 



Lowest. 



Range. 



Mean. 



Highest. 



Lowest. 



Range. 



Mean. 



Greatest. 



Least. 1 





d. h. 



in. 



d. 



h. 



in. 



in. 



in. 



d. 



in. 



d. 



in. 



in. 



in. 



d. 



in. d. 



in. 



Jan. 



23 



30-052 



27 



18 



28-809 



1-243 



29-430 



1 



30031 



28 



28-876 



1-155 



29-453 



25 



0-730 7 



0-040 



Feb. 



11 22 



30-077 



25 



17 



29-213 



0-864 



29-645 



12 



30-006 



22 



29-285 



0-721 



29-645 



24 



0-568 28 



0-031 



March 



8 23 



30-244 



27 



21 



28-839 



1-405 



29-541 



7 



30-185 



28 



29-051 



1-134 



29-618 



29 



0-618 



4 



0-057 



April 



16 20 



30-289 



9 



4 



28-860 



1-429 



29-574 



16 



30-255 



9 



28-910 



1-345 



29-582 



14 



0-684 



2 



0-067 



May 



\^^'.l\ 



30-161 



1 



6 



29-225 



0-936 



29-693 



14 



30-123 



1 



29-257 



0-866 



29-690 



13 



0-395 



9 



0-026 



June 



( 9 22) 



110 2/ 



5 10 



30-072 



3 



11 



28-874 



1-198 



29-473 



10 



30-047 



6 



29-038 



1-009 



29-542 



3 



0-565 



13 



0-043 



July 



30-003 



1 



5 



28-727 



1-276 



29-365 



21 



29-976 



1 



29-055 



0-921 



29-515 



1 



0-706 



{'«} 



0034 



Aug. 



31 



30-175 



19 



20 



29-008 



1-167 



29-591 



30 



30-146 



20 



29-126 



1020 



29-636 



21 



0-397 



13 



0-030 



Sept. 



13 



30-162 



18 



2 



28-781 



1-381 



29-471 



1 



30-094 



18 



28-839 



1-255 



29-466 



19 



0-721 



4 



0-032 



Oct. 



22 9 



30-177 



8 



16 



28-946 



1-231 



29-561 



23 



30-139 



9 



29-052 



1-087 



29-595 



30 



0-489 



31 



0-067 



Nov. 



2 13 



30-138 



19 



13 



28-239 



1-899 



29-188 



3 



30-103 



19 



28-441 



1-662 



29-272 



20 



0-658 



3 



0-077 



Dec. 



12 11 



30-284 



19 



15 



28-282 



2-002 



29-283 



13 



30-191 



20 



28-583 



1-608 



29-387 



23 



1-147 



15 



0-134 



TABLE XXIV. — Hourly Variations of the Pressure of Dry Air for each Astronomical Quarter, 



and for the Year 1845. 



Mak. 

 M. T. 



Nov. 

 Dec. 

 Jan. 



Feb. 

 March. 

 April. 



May. 

 June. 

 July. 



Aug. 

 Sept. 

 Oct. 



Year. 



Mali. 

 M. T. 



: Nov. 



Dec. 

 Jan. 



Feb. 

 March. 

 April. 



May. 

 June. 

 July. 



Aug. 

 Sept. 

 Oct. 



Year. 



h. 



in. 



in. 



in. 



in. 



in. 



h. 



in. 



in. 



in. 



in. 



in. 



12 



0-019 



0-022 



0-042 



0-040 



0-028 







0-013 



0-016 



0-009 



0^005 



0^008 



13 



-010 



•020 



-042 



•038 



-025 



1 



•006 



-Oil 



•008 



•003 



•005 



14 



•013 



-018 



-043 



-040 



-026 



2 



•002 



-004 



•002 



•002 



•000 



15 



-006 



-014 



-046 



•037 



-024 



3 



-006 



-000 



-003 



•002 



•000 



16 



-000 



-016 



-044 



-036 



-022 



4 



-014 



-002 



-000 



-000 



•002 



17 



-000 



-017 



-041 



-040 



-022 



5 



-019 



-005 



-001 



-005 



■005 



18 



•003 



-017 



-031 



-043 



-021 



6 



•025 



-009 



-on 



-009 



•Oil 



19 



•012 



-018 



-028 



-039 



-022 



7 



-025 



-014 



•016 



•020 



•016 



20 



-020 



-019 



-023 



-031 



■021 



8 



-025 



-019 



-026 



•029 



•022 



21 



-026 



-018 



-021 



-024 



-019 



9 



•022 



-021 



•032 



•035 



•026 



22 



-025 



•021 



•017 



•018 



•018 



10 



-021 



-023 



-039 



•039 



•028 



23 



-023 



-019 



•013 



-012 



•015 



11 



-023 



•023 



•043 



•042 



•031 



i 



