The name of Guyet as an emendator will be known to those who use Professor Clausen's edition of Juvenal, e.g. on 6.65 and 632-3; 7.138; 8.6-8. From Professor Courtney's commentary (p. 62) they will learn that the notes of Guyet were published by M. de Marolles in his edition of 1658. The attentive reader will note also that between the first and the second printing of Clausen's edition the credit for deleting 8.6-8 was transferred from Jachmann to Guyet—a circumstance which in itself suggests that the rediscovery of Guyet's conjectures is of recent date. The serious student of the text of Juvenal may therefore be grateful for the following facts.