0.\ THE E.^KTHQIAKE A\l) \OLCAyiC rilE.NOME.NA OF JAP.A.V. Ii7 



The barometer readings are given as tlie number <<i millimetres above 

 700. 



The barometrical change is the difference in the readings on successive 

 days taken at 2 p.m. 



The numbers representing barometric gradient are the number of 

 millimetres on the weather map (where 1 mm. = G geo. miles), which cor- 

 respond to a difference in jDressui-e of 5 mm. AVhere a number is omitted 

 it means that the barometrical pressure has been fairly uniform over 

 Central Japan. 



Temperature is indicated in the Centigrade scale and rain in milli- 

 metres. 



To show the state of the weather the following signs have been used — • 

 o?=cloudy, c=clear, ?'=rain,y'=fine,yy/ = fog, and s=snow. 



The relative humidity is in percentages, 100 being saturation. 



Tension is expres.sed in millimetres of mercury. 



The force of waves is recorded at 2, 6, and 10 a.m., and at 2, 6, and 10 

 P.M. at the various lighthouses round the coast. The scale employed is as 

 follows : — = calm, l=smooth, 2 = moderate, 3 = rough, 4: = high, S^very 

 high, 6=tremendous. In the tables the mean value for the above hours 

 is given for Jogashima, 33 miles south from Tokio, and for Inuboye, 53 

 miles east of Tokio. 



(/) Earthquakes recorded hy ITorizonlal Feiididums in Tokio, October 31, 



1894, to February 7, 1895. 



To obtain Greenwich mean time, subtract nine hours. The instrument 

 which recorded a given shock is indicated by its letter. The numbers 

 in brackets indicate the width in millimetres of the displacement as 

 shown upon the photographic trace. The times given are obtained by 

 a rough measurement of the diagrams. For several of these disturb- 

 ances it would have been desirable to have tnade the time observations 

 more accurate, but owing to the loss of my notebooks by lire, this is now 

 impossible. 



Time evidentlv wron?. 



L 2 



