46 Dr. Bottomley on the late 



was also diminishing, thus giving additional weight to the 

 probability that changes in the heating power of the sun's 

 rays are intimately connected with variations in solar spot 

 frequency. — " On the Supposed Influence of the Moon on 

 the Temperature of the Atmosphere." A discussion of a 

 paper contained in the monthly notices of the Royal 

 Astronomical Society, entitled " Inductive proof of the 

 Moon's insolation," by J. Park Harrison, M.A. After an 

 examination of the evidence he comes to the conclusion that 

 Mr. Harrison's results cannot be regarded as a proof of the 

 moon's insolation ; or that it has any sensible effect upon 

 the temperature of the atmosphere near the surface of the 

 earth. 



Session i868-6g. — "Observations of Atmospheric Ozone." 

 He thinks it probable that the amount of ozone near the 

 earth's surface is dependent upon the height at which clouds 

 are formed in the atmosphere. He gives his opinion with 

 hesitation, and states that the subject is one in which the 

 meteorologist requires the aid of a chemist, and that the 

 method now employed for detecting the presence of ozone 

 in the atmosphere and measuring its amount is very imper- 

 fect, and the causes of its frequently sudden development, 

 and almost equally rapid disappearance, are at present 

 involved in mystery. In a subsequent paper the late Pro- 

 fessor Jevons states, "During my own observations on ozone 

 I felt strongly the imperfection of the method of measure- 

 ment alluded to by Mr. Baxendell, and I thoroughly agree 

 with him that the mysterious variation of ozone will not be 

 understood until not only the quantity of air brought into 

 contact with the paper be measured, or regulated, but the 

 varying source and magnitude of supply be considered." — 

 "On the Lunar Spot IvAai/, IVA239"; "Observations of 

 the Transit of Mercury"; "The Bleaching Action of the 

 Atmosphere on Ozone Test Papers on the Day of the 

 Colliery Explosion at Hindlcy Green;" "On a Diurnal 



