July, 1887.] ' ELLIOTT SOCIETY. 163 



other room. Some beams from tlie ceiling fell in tliLs room and injured the cases 

 below them, but I do not think that this case was struck by them. 



44. The southern half of the roof of each of the wings of the College was 

 most seriously injured, presenting the appearance of having been driven dowTi- 

 wards by a tremendous blow from above, the broken joists of the ceiling of the 

 upper room in the west wing projecting downwards into that room, nearly 

 touching the cases beneath, as mentioned above. The northern slope of the 

 roofs was much less injured, while jDortions of the north walls under the eaves 

 leaned outwards, threaterdng to fall, and did afterwards fall during one of the 

 subsequent minor shocks. 



45. The Statue on the Cupola of the Orphan House was found leaning at an 

 angle of about 50° or 60° with the horizon, and in direction S. 40'' E., as well 

 as could be determined by compass. 



At another time, I propose to discuss the facts above given, and to present 

 such conclusions as I may be able to draw from them. I have collected these 

 facts unaided except by some members of my family, and in some cemeteries by 

 the keeper of that cemetery. The aid of the keeper was important as it pre- 

 vented me from mistaking some of the effects of the cycLme of 1885, for those 

 of the earthquake of 1886. 



Tlie Chairman read tlie folloTN-ing 

 Remarks on his own observations given in the preceding Report. 



BY PEOF. LEWIS E. GIBBES. 



It is evident from the preceding account of 45 cases, that the dhections in 

 which bodies fell d.irmg the commotion were very various, and gi'eat care will 

 be required to deduce results of sufficient value. In some cases the data are 

 insofScient, either being unattainable, or in a few cases overlooked at the time 

 ol examination. 



We will begin with the most distinct cases, which are not many, in which a 

 mass was found at some distance from the foot of the pillar on the top of which 

 it oiigmally stood, and these cases I regard as iadicating the direction of the 

 original impulse or shock ; and the velocity of projection, supposed horizon- 

 tal, can be computed by well known methods. Each of these bodies must 

 have been attached with sufficient firmness to enable it to partake of the mo- 

 tion of the whole structure, for if not attached it would be left behind and 

 simply fall off on that side whence the impulse came. Some ot its energy of 

 motion must then be expended in breaking this attachment, and the calculated 

 velocity of projection must always be less than that due to the energy of the 

 original impulse. Six cases, Xos. 33, 30, 8, 42, 13 and 41, indicate very dis- 

 tinctly these du-ections respectively, N. 15' E., X. 11^ E., X. 8' E., N. 10"' W., 

 N. 23^ W., N. 35^^ W. The velocity of projection varies from 3 feet per second 

 iu case 30, to 15 feet per second in case 42. If we omit case 41, in which the 



