24 
indieated by the leaves and at a distance from the point of observation 
calculated in a simple manner. i 
Mr. Nowack usually fixes a period of four or five days some little 
time ahead of the date on which the curving reached a maximum. This 
period he speaks of as a “ critical period.” He is guided in his deter- 
mination of it partly by data as to great disasters of this kind which he 
has collected for some years; partly by a consultation of astronomical 
tables. Mr, Nowack believes in the existence of definite “critical 
Thi 
Mr. Scott's report. There will also be found a list of authenti- 
According to the accepted definition of Mr. Nowack's “ earthquakes,” 
the prophecy will be sufficiently fulfilled if there is a sudden barometric 
rise at the times and places in question. 
Similarly barographs are given covering the times of the prophesied 
* schlagwetters." accepted definition of schlagwetter (for the 
purposes of this report) isa sudden barometric fall Examination of 
the barographs will show how far Mr. Nowack's anticipations have 
justifi i 
My own view is that these extreme curvatures of the rachis indicate 
the ] cover after 
special curvature commenced, whilst in the latter it pointed more or less 
upwards, and the on-coming curvature does not obliterate this in the 
basal portion of the rachis. 
In conclusion, I contend that all the movements exhibited by the 
cum depend on eauses not so far to seck as those 
The position for snow and hail is connected intimately, in the cases 
that have come under my own observation. with a spotting or biting 
(by insects) of the leaflets, and is not due to any other external 
factor. 
The position for fog and mist and for electricity in the air is pro- 
bably due to the disturbance caused by varying light, the rhythmical 
movements of the leaflets being temporarily overthrown, — . 
