E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
As an instalment, good enough as far as it goes, but not final; for what it is worth.
I heard Mr. Parnell accept the Bill of 1886 as a measure that would close the differences between the two countries; but since then he stated that he had accepted it as a pro tanto measure . It was a parliamentary bet, and he hoped to make future amendments on it.Mr. Chamberlains speech, April 10th, 1893.