1860.] Notes upon some remarlcable Waterspouts. 371 



lowest extreme point, at the moment of bursting was 1,500 perpen- 

 dicular feet. 



Half an liour after this waterspout had disappeared another form- 

 ed to the east of my position ; it was a very attenuated column 

 about 900 or 1000 feet in length, but the cloud from whence it de- 

 scended being upwards of 2000 feet above the earth, no contact was 

 completed ; the column which lasted for half an hour gradually 

 faded away, being absorbed upwards into the cloud from whence it 

 had descended. The cloud and column were moving rather rapidly 

 towards the south, which probably accounts for the column never 

 reaching the ground. The column gyrated and oscillated violently, 

 lengthening and contracting as shown in the diagram, where eleven 

 diíferent positions of the column are given sketched at intervals of 

 from 2 to 5 minutes. 



Towards sunset, the clouds began to yield to the north-wind and 

 were gradually driven out to sea, leaving a clear cloudless sky, and at 

 9 o'clock at night not a cloud was to be seen. 



The north-east monsoon had fairly set in. 



inches 

 Barometer at the time 3 p. m. ... ... 29.796 



Attached thermometer, ... ... ... 85°. 8 



Dry ditto, ... ... ... ... 86°.2 



Wet ditto, ... ... ... ... 81°.8 



3 o 



