PERIOD OF VIBRATION OF STEAM VESSELS. 139 



Mr. Cornbrooks : — This paper is simply an attempt to follow out the observations 

 which were made some time ago on the naval colliers Orion, Jason and Neptune, and is 

 really a supplement to the paper of Naval Constructor Smith in which he gave the result 

 of experiments on those vessels. I do not know that there is anything very new in the 

 paper, except that it rather fills out the previous paper and brings the data up to date. The 

 principal object in writing it was in the hope that there would be some discussion from other 

 yards, especially from the Lakes, in reference to the experience which has been had on these 

 same lines. 



