362 Mr. J. Glaisher's Remarks o?i the Weather 



30-039. These readings are 0*088, 0-091, and 0*289 greater 

 respectively than the averages of the same months in the pre- 

 ceding nine years. 



The reading of the barojneter at Greermich was 30* 17 inches 

 on January 1; decreased to 29*31 by lO'^ a.m. on the 6th; 

 increased to 2990 by the 13th; decreased to 29*27 by the 

 15th; increased to 29*86 by the 18th; decreased to 29-34. 

 by the 19th; increased to 30*4-0 by the 22nd; decreased to 

 29*28 by 3^^ P.M. on the 26th ; increased to 3042 by the 27th 

 at l'^ P.M., having passed the point 30*00 at midnight. This 

 great increase of 1*14' in twenty-two hours was very great. 

 The reading on the 28th was 29*74 ; increased to 30*22 by 

 the 30th ; decreased to 28*80 by February 6 ; increased to 

 29*60 by Feb. 8 ; decreased to 29*30 by Feb. 9 ; increased to 

 30*00 by Feb. 10; decreased to 29*12 by the 12th, and in- 

 creased to 30-00 by the 16th ; and from this day till March 22, 

 with the single exception of March 3, the reading was above 

 30 inches. This high reading for so long a period is remark- 

 able. On March 23 the reading was 29*39, which increased 

 to 30*01 by the 29th, and decreased to 29*67 by the end of 

 the month. 



The average isoeight of a cubic foot of air for the quarter, 

 under the average temperature, humidity and pressure, was 

 551 grains; being six grains greater than the average from 

 the eight preceding years. 



The rain fallen at Greentsoich in January was 1*2 inch, in 

 February was 1*3, and in March was 0*3 respectively. The 

 falls for these three months on an average of thirty-four years, 

 are 1*6, 1*6 and 1*4< respectively. 



The average daily ranges of the readings of the thermometer 

 in air at the height of four feet above the soil, in January 

 was 8°*5, in February was ll°-6, and in March was 16°-4'. 

 The averages for these three months from the preceding nine 

 years were 8°*4, 10°-0 and 13°*4 respectively. 



The minimum readings of the thermometer on grass in Janu- 

 ary was at or below 32° on twenty-four nights ; the lowest waS 

 12°*8, and exceeded 32° on seven nights; the highest was 

 40°-5. In February the readings were at or below 32° on 

 sixteen nights ; the lowest was 1 9°, and exceeded 32° on 

 twelve nights ; the highest was 44°. In March the reading 

 was at or below 32° on twenty-four nights ; the lowest was 

 12°*8, and exceeded 32° on seven nights; the highest was 40°. 



The temperature of the Thames water, from the observations 

 of Lieut. Sanders, R.N., Superintendent of the Dreadnought 

 Hospital Ship, was 32°*4 in January, 41°*3 in February, and 

 4<1°*2 in March. 



