MEAN SCOTTISH METEOROLOGY. 285 



Not content therefore with the separate curves of each, I have prepared in Plate XL 

 one projection showing a simple mean of Lightning with Aurora; and obtain thereby a very 

 poor curve, deficient in the chief characteristics both in shape and time, of the Sun-spot 

 curve hanging over it. But having also prepared on the same Plate another projection, 

 showing the Lightning brought forward by two years, and then meaned with the Aurora, 

 — all the intensities and dates of the Sun-spot curve are absolutely re-inforced. As may be 

 further contemplated in Plate XII., where the Lightning, brought forward by two years is 

 combined with three times its weight of Aurora ; and the curve well shows that we have 

 not been having of late any of those splendid displays which were so frequent in 1869, 

 1870, 1871 and 1.872. Wherefore, if you ask why ; — the want of energy in the present 

 Sun-spot cycle is the nearest phenomenon to the real cause, that can be quoted from 

 crude observation. 



But enough has now probably been said of Mean Scottish Meteorology, its history 

 so far as chronicled, and its probable cosmical relations. So that it is time to take up 

 the too long delayed part of the local, the particular and the personal belonging to it. 



10. Of an unfinished Paper on the individual characteristics of every 



Station employed. 



The said Part of, or Annexe to, the present large Paper of Means, was purposed to 

 take up, one by one, each and every individual Station, which had at anytime communi- 

 cated two good years of observations to the Scottish Meteorologic Society ; and had been 

 approved by that collective body to the extent of having been included in the " Honours " 

 list, of those presented monthly to the Registrar General of Births, Deaths, &c. in 

 Scotland. 



Printed forms were accordingly prepared for each Month of the year, in two following 

 years ; on which forms the divergences through all the chief Meteorological items, of any 

 given Station, from the Mean of the whole country, in the same Month, and same year, 

 were entered with their proper signs. The mean of two such annual discussions of 

 months, forming the twelve single mensual lines of quantities proposed to be printed 

 after each Station's, Owner's, and Observer's, names, together with a general description 

 of the locality in sociology, geology and geography. 



The work however turned out to be too extensive to be completed within the interval 

 allowed for it, and the MSS. pages, so far as they were carried, are left in the official 

 keeping of the Royal Observatory, Edinburgh. 



C. P. S. 



VOL. XXXV. PART. 3. 3 B 



