Tropical and Extra-tropical Cyclones. 21 

 Fig. 9. 



Typhoon in the Philippines, October 20th, 1882. 

 Fig. 10. 



and 10, where reductions are given from two diagrams in the 1 Obser- 

 vatorio Meteorologico del Ateneo Municipal de Manila. Observa- 

 ciones verificadas durante el ano de 1882.' 



In fig. 9, the oval form, and centre displaced towards the rear, are 

 almost identical in general character with the British cyclone given 

 in fig. 1 ; only the sharpness of the central depression is much 



