1885. ] S. A. Hill—Observations of the Solar Thermometer. 23 
49. MAcH#ROTA PUNCTULATA, Signoret. 
Macherota punctulata, Signoret, A. S. H. F. (5 Sér.), ix. p. xlix. (1879). 
Brownish yellow, with the middle of the frons, the abdomen above 
(except the base), the feet (except the posterior tibiz), and the frontal 
grooves, black ; several transverse black spots on the thorax which is very 
finely punctured: metanotum brownish with two yellow, lateral, basal 
spots, the tip and the process blackish : tegmina elongate, five-celled and 
above the marginal two to three others smaller, very distinct : the hyaline 
nervures are spotted with several brown dots. Long 4 millims. 9. 
Reported from Silhat. 
Note. Oosmopsaltria abdulla, Distant, noticed as No. 57 at page 226 of the 
Journal for 1884 is the same as Oosmopsaltria spinosa, Fabricius, No. 59. The 
Indian Museum possesses a specimen of Cosmoscarta siamensis, Butler, but the 
locality being uncertain, it has not been entered here. 
 —EOOEE—EOEOeeEeeOEeESOeOSEOeeesee@—@nm@”_o_—reee™S 
TII.—On Observations of the Solar Thermometer at Lucknow.—By 
S. A. Hint, B. Sc., A. R. S. M., Meteorological Reporter North- 
Western Provinces and Oudh. 
[Received 23rd March 1885 ;—Read 6th May 1885. | 
In the volume of this Journal for 1883,* I have discussed some 
observations of solar radiation made at Allahabad with the ordinary 
black-bulb maximum thermometer in vacuo. The conclusions drawn 
from these were that the absorbing power of the atmosphere is depen- 
dent upon the tension of aqueous vapour and the quantity of dust 
suspended in the air, pure dry air being very diathermanous; and _ that, 
when allowance is made for the variations of aqueous vapour, the mean 
results for the heating power of the sun during the years 1876—1882 
exhibit a very uniform and gradual variation, culminating in 1878 and 
gradually decreasing afterwards, therefore presumably having an inverse 
relation to the number of spots on the sun’s surface. The resulting 
variation is so regular in its character that, irrespective of its pointing to 
a conclusion regarding the sun’s heat which is the reverse of that gene- 
* Vol. li. Part ii. 
