February pt/i, 1915.] PROCEEDINGS. xiii 



presented by the Hertfordshire Natural History Society ; and 

 " Novem Carmina" (8vo., Amstelodami, 1914), presented by 

 the Kon. Akad. Wiss. zu Amsterdam. 



Mr. W. C. Jenkins, F.R.A.S., read a paper entitled 

 "Manchester Fogs of the last ten years." 



Prof. W. W. Haldane Gee, B.Sc., M.Sc.Tech., read a 

 " Note on the Monthly Variation of Sunshine." 



These papers are printed in full in the Memoirs. 



A paper entitled " Weather Repetitions, with sug- 

 gestions for long distance forecast," was read by Mr. W. C. 

 Jenkins, F.R.A.S. 



He drew attention to the repetitions in the weather for 

 periods of twelve hours, twenty-four hours, seven days, and the 

 lunar month, and also annual repetitions, making certain 

 allowances — using particularly the records of rainfall. With a 

 view to establishing these repetitions to a definite origin, he 

 showed the connection between numerous cyclonic paths and 

 extra terrestrial phenomena, and assuming similar forces acting 

 in temperate latitudes, he proceeded to demonstrate that 

 cyclonic movements in the regions of this kingdom followed 

 very much the variations expected under these conditions. 



Ordinary Meeting, February 9th, 1915. 



The President, Mr. Francis Nicholson, F.Z.S., 

 in the Chair. 



A vote of thanks was accorded the donors of the books 

 upon the table. Amongst the recent accessions were : " Tht 

 Mississippian Brachipoda of the Mississippi Valley Basin" by 

 Stuart Weller (8vo., Urbana, 111., 1914), presented by the Illinois- 

 State Geological Survey; " Oeuvres completes de Thomas Jan 

 Stieltjes" Tome I. (4to., Groningen, 19 14), presented by the 





