When the doctors were left alone, the family doctor began timidly explaining his opinion, that there was a commencement of tuberculous trouble, but...and so on.

The celebrated doctor listened to him, and in the middle of his sentence looked at his big gold watch.

"Yes," said he.

" But..." The family doctor respectfully ceased in the middle of his observations.

"The commencement of the tuberculous process we are not, as you are aware, able to define; till there are cavities, there is nothing definite.