48 Dr. C. Davison on 



2. Recorded by seismographs of different kinds; felt by a 

 small number of persons at rest. 



3. Felt by several persons at rest ; strong enough for the 

 duration or direction to be appreciable. 



4. Felt by several persons in motion ; disturbance of 

 movable objects, doors, windows ; creaking of floors. 



5. Felt generally by everyone ; disturbance of furniture 

 and beds ; ringing of some bells. 



G. General awaking of those asleep ; general ringing of 

 bells ; oscillation of chandeliers, stopping of clocks ; visible 

 disturbance of trees and shrubs ; some startled persons leave 

 their dwellings. 



7. Overthrow of movable objects, fall of plaster, ringing 

 of church-bells, general panic, without damage to buildings. 



8. Fall of chimneys, cracks in the walls of buildings. 



9. Partial or total destruction of some buildings. 



10. Great disasters, ruins, disturbance of strata, fissures in 

 the earth's crust, rock-falls from mountains. 



(7) Rockwood Scale. — Prof. C. G. Rockwood, Jun., Amer. 



Journ. Sci v vol. xxxii. 1886, pp. 7-8. 



Though independently formed, this is nearly the same as 

 that used in the Philippine Islands. It resembles the latter 

 also in consisting of adjectives only, the significance of which 

 would be indeterminate, if the author had not expressed them 

 in terms of the decrees of the Rossi-Forel scale. 



1. Very light. 



2. Light. 



3. Moderate. 



4. Strong. 



5. Severe. 



6. Destructive. 



(8) Baratta Scale. — M. Baratta, " II terremoto Veronese 



del 7 giugno 1891 " : Annali dell' Ufficio Meteoro- 

 logico e Geodinamico, vol. xi. (for 1889), 1892, 

 p. 19. 



So far as I know, this scale has only been used in the study 

 of the Verona earthquake of 1891. It resembles rather 

 closely the modification of the Rossi-Forel scale which I have 

 employed in investigating British earthquakes. 



1. Very slight, noted by instruments only. 



2. Slight, felt by a few persons without the aid of instru- 

 ments. 



3. Moderate, accompanied by general shaking of fastenings, 

 crystals, &c. 



