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CORRESPONDENCE. 
*** The Editor does not hold himself responsible for statements of fadts or 
opinions expressed in Correspondence, or in Articles bearing the signature 
of their respective authors. 
HAILSTORMS. 
To the Editor of the journal of Science. 
Sir, — lam preparing a memoir for the Meteorological Society, on 
“ Hailstorms.” Might I ask you to assist me by requesting any 
of your readers who have opportunities of observing hailstorms 
to furnish me with particulars of them ? The points to be parti- 
cularly observed are as follow : — 
1. Date , and hour of the day. 
2. Area of the Storm. If it assume the tornado form, give 
(a) length of the course, ( b ) breadth, ( c ) direction of 
motion, ( d ) rate of progression. 
3. Physical Features of the locality: (a) elevation, ( h ) moun- 
tains and plateaux, ( c ) rivers and valleys, ( d ) forests, &c. 
4. Temperature : {a) before the storm, (b) after the storm, 
and, if possible to be observed, ( c ) changes during the 
storm. 
5. Barometrical Readings, frequently taken during time of 
hailstorm. 
6. Wind : (a) direction near the earth’s surface, ( b ) direction 
in the higher regions as indicated by the cloud-motions, 
(c) force. 
7. Preceded or followed by Rain. 
8. Aspect of the Clouds. Note if there is any appearance of 
two separate strata at different elevations. 
9. Electrical Phenomena. Should there be lightning, note 
the relation between the discharges and the fall of the 
hail — whether the lightning precede the hail, or vice 
versa. 
10. Duration of the storm at one spot. 
11. Sound. Note if a peculiar noise precede the descent of 
the hail, 
