This advert doesn’t add much to the advert of March 1914. But it does use the word ‘Whippet’ as a generic name for derailleur geared bicycles. As readers of this site may know, Whippet was the brand of an early British derailleur bicycle - but, in pre-World-War-I France, it seems to have acquired the same status as Biro and Hoover. Paul de Vivie (Vélocio) regularly referred to derailleur bicycles as ‘Whippets’, but this advert indicates that this was becoming common parlance.
(Source gallica.bnf.fr/ Bibliothèque nationale de France)