426 



Results or Makerstoun Observations, 1844. 



Table XXV. contains the means of the maximum pressures of wind recorded by the anemometer between 

 the hours of observation : Table XXVI., which follows, contains the means of the maximum pressures recorded 

 within about 1 m at the hour of observation. The latter, therefore, will represent more nearly the mean pres- 

 sure of the wind ; they would require, however, to be multiplied by a constant coefficient to obtain the true 

 mean ; this coefficient has not been yet ascertained. 



Annual Variation of the maximum Pressures of Wind. — From Table XXV. the mean of the maximum 

 pressures between the hours of observation was greatest in November and least in July. The following are 

 the means for the meteorological quarters : — 



lb. 



Winter, Dec, Jan., Feb., 0-42 Summer, June, July, Aug., 



Spring, March, April, May, 0"60 Autumn, Sept., Oct., Nov., 



lb. 

 0-53 

 0-75 



lb. 



The year 1844, 0*58 



The pressure is greatest in autumn, is least in winter, and is less in summer than in spring, 

 for July, August, and September is as small as that for winter. 



The 



TABLE XXVI.— Daily, Weekly, and Monthly Means of the Pressure of Wind, in Pounds on the 

 Square Foot of Surface, deduced from the greatest pressures observed within 10 m at the hours of 

 observation, in 1844. 



Civil. 

 Day. 



Jan. 



Feb. 



March. 



April. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 





lb. 



lb. 



lb. 



lb. 



lb. 



lb. 



lb. 



lb. 



lb. 



lb. 



lb. 



lb. 



1 



0-00 



0-04 



0-65 



018 



0-05 



004 



014 



0-47 



[0-16] 



1-00 



1-94 



[0-22] 



2 



0.07 



0-05 



1-03 



Ml 



0-00 



[0-20] 



0-02 



0-30 



008 



265 



2-39 



0-01 



3 



0-55 



0-10 



[0-48] 



0-15 



0-10 



0-00 



006 



0-38 



0-23 



1-78 



[1-39] 



001 



> 4 



0-00 



[0-10] 



0-67 



000 



0-08 



0-57 



0-09 



[0-69] 



0-41 



0-54 



0-88 



0-16 



5 



0-21 



0-00 



012 



007 



[0-06] 



0-39 



001 



005 



0-52 



0-13 



0-76 



006 



6 



0-00 



0-00 



0-39 



0-07 



0-14 



0-29 



0-05 



1-45 



0-22 



[0-87] 



1-30 



003 



7 



[0-13] 



0-42 



0-02 



[0-17] 



000 



0-55 



[0-14] 



1-49 



0-16 



0-16 



0-08 



0-51 



8 



0-00 



Ml 



0-48 



0-37 



0-02 



0-84 



0-13 



1-07 



[0-28] 



0-48 



0-32 



[0-11] 



9 



0-59 



0-92 



2-70 



0-22 



003 



[0-58] 



0-09 



0-70 



0-23 



2-11 



0-10 



0-04 



10 



0-00 



0-78 



[0-97] 



0-30 



0-39 



0-67 



0-46 



0-07 



0-22 



1-04 



[0-26] 



002 



11 



o-oo 



[0-54] 



1-30 



0-64 



011 



0-50 



0-84 



[0-38] 



0-32 



0-39 



0-57 



0-00 



12 



0-01 



0-00 



115 



0-35 



[0-11] 



0-65 



0-27 



0-27 



0-49 



0-28 



0-32 



011 



13 



0-08 



0-16 



0-19 



0-27 



0-08 



1-91 



009 



0-03 



0-06 



[0-44] 



0-20 



0-34 



14 



[0-02] 



0-25 



0-09 



[0-47] 



004 



2-45 



[0-26] 



0-15 



0-45 



0-27 



012 



0-61 



15 



0-00 



0-38 



0-60 



0-65 



000 



1-27 



0-09 



0-46 



[0-35] 



0-28 



1-24 



[0-22] 



16 



0-00 



Ml 



1-56 



0-60 



0-02 



[0-95] 



0-17 



0-19 



0-58 



0-36 



0-80 



0-18 



17 



0-00 



0-15 



[0-50] 



0-32 



M4 



0.00 



0-08 



0-43 



0-25 



1-09 



[0-78] 



005 



18 



093 



[0-49] 



0-00 



0-36 



0-31 



0-00 



0-07 



[0-45] 



0-25 



0-29 



1-51 



003 



19 



1-18 



0-89 



0-17 



0-39 



[0-55] 



0-07 



0-12 



0-35 



0-16 



0-20 



0-52 



0-00 



20 



0-08 



0-40 



0-60 



0-37 



0-57 



0-11 



011 



0-88 



0-31 



[0-28] 



0-47 



000 



21 



[0-38] 



0-04 



0-27 



[0-63] 



M9 



0-31 



[0-11] 



0-37 



0-06 



001 



0-08 



001 



22 



0-00 ' 



0-05 



0-16 



0-22 



005 



0-60 



0-24 



002 



[0-14] 



005 



005 



[0-01] 



23 



000 



0-14 



014 



1-06 



0-05 



[0-34] 



0-13 



0-10 



o-io 



0-05 



0-18 



002 



24 



0-09 



0-44 



[0-24] 



1-40 



0-07 



013 



0-02 



005 



0'05 



001 



[0-31] 



002 



25 



0-70 



[0-42] 



0-49 



0-29 



0-28 



0-58 



0-13 



[0-11] 



0-17 



0-12 



0-03 



004 



26 



0-32 



1-51 



047 



0-55 



[0-13] 



0-33 



007 



0-27 



0-75 



0-26 



0-22 



0-14 



27 



0-22 



0-32 



0-23 



0-64 



0-25 



0-08 



0-04 



0-18 



0-75 



[0-18] 



1-29 



0-00 



28 



[0-92] 



0-07 



0-22 



[0-26] 



0-02 



012 



[0-15] 



005 



0-54 



0-11 



0-82 



000 



29 



1-81 



004 



0-08 



0-03 



011 



0-10 



0-39 



0.10 



[M2] 



0-15 



0-28 



[0-02] 



30 



1-60 





0-00 



0-03 



0-15 



[0-09] 



0-11 



007 



1-03 



0-44 



0-02 



0-00 



31 



0-87 





[0-29] 





0-05 





0-17 



010 





1-06 





001 



Mean 



0-34 



0-37 



0-52 



0-41 



0-20 



0-50 



0-16 



0-37 



034 



0-57 



0-63 



0-09 



