PART in. THE CYCLE OF A YEAR. 25 



miles per hour when the wind does blow. But it has 

 also a maximum of days when there is no wind at all. 

 Of these, or calm days, Jerusalem is said to have 9, 

 Scotland 20, Lisbon 64, but Madeira no less than 78 days 

 of such perfectly quiet air that you can sit out in a 

 garden as if within four walls. 1 



Rain-band, Spectroscopic. 



In the final return for indicating and very directly 

 too the usually invisible watery vapour dissolved in any 

 atmosphere, which I will venture to touch upon here, 

 viz. the Spectroscopic analysis of the daylight which has 

 come through the lower part of the apparent sky, we 

 have unfortunately no returns from Jerusalem ; only two 

 months each from Madeira and Lisbon ; and though the 

 whole twelve are exhibited for Scotland in Appendix II., 

 they would not have been there but for Mrs. Piazzi 

 Smyth's long-continued enthusiasm for the idea, as an 

 addition of importance to her daily meteorological journal 

 at home. 



1 By aid of the useful little volume published yearly by the Astronomer- 

 Royal of Madrid Annuario del Observatorio de Madrid 1879 I have been 

 enabled to add to Appendix II. a table for the climate of that city, comparable 

 to those of our four chief stations ; and it seems to prove that the Madrid 

 meteorology comes very nearly between those of Lisbon and Jerusalem in 

 such a manner, too, as much to confirm our tables for these two cities, 

 leaving Madeira more than ever unique for equable temperature, and abun- 

 dance of watery vapour dissolved in her atmosphere all the year round. 



