They fought with more pertinacity than bulldogs.
In the end the pertinacity of John triumphed.
This pertinacity engendered a belief in France that Italy was about to undertake in Tunisia a more aggressive policy than necessary for the protection of her commercial interests.
Returning to France in 1815, he commanded a division on the French left wing at Waterloo and attacked Hougomont with great pertinacity.
This method, which in process of time was dignified by the title of a Physiological Arrangement, was insisted upon with more or less pertinacity by the author throughout a long series of publications, some of them separate books, some of them contributed to the memoirs issued by many scientific bodies of various European countries, ceasing only at his death, which in July 1857 found him occupied upon a Conspectus, Generum Avium, that in consequence remains unfinished.