In this volume Simon Tugwell, who is well known for his numerous contributions to the early history of the Dominican order, edits the Lives of St Dominic by Humbert de Romans and associated texts. Humbert's Legenda prima was prepared for the Dominican lectionary of 1246, his Legenda maior for the lectionary of 1256. The introduction to this edition includes a thorough investigation of the development of the lectionary. Tugwell shows that the principal source of the Legenda prima and Legenda maior is Petrus Ferrandi, but with considerable use of Constantine in the Legenda maior. The latter has some original elements, which are closely examined (pp. 73–103). The other works by Humbert discussed are the Expositio super constititutiones (which Tugwell shows to have been transmitted in two distinct versions); the encyclical letter issued together with the minister-general of the Franciscans, John of Parma; the constitutions for Dominican nuns; the Cronica ordinis (Cronica posterior); De eruditione predicatorum; De tribus votis substantialibus; the Questiones circa statuta ordinis predicatorum; and the Opus tripartitum. There is a full analysis of the text of Gregory ix's Fons sapientie of 3/13 July 1234, which canonised Dominic. Tugwell is sceptical about the supposed Joachimite influence on this document. The introductory matter, which makes up the bulk of the volume, ranges widely, with discussions of, for instance, the Dominican liturgy, the University of Toulouse and relations between the Dominican and Franciscan orders. The texts edited consist of the Legenda prima and Legenda maior, the table of contents to the Legenda maior which is unique to a manuscript from Rouen (now in the Bibliothèque nationale de France), the Miracula rotomagensia (a local miracle collection occurring in the same manuscript), Humbert's Materia predicabilis de festis sancti Dominici, and Fons sapientie. The editor prints Fons sapientie from six letters extant in the original but without reference to the copy in the papal registers (see L. Auvray, Les Registres de Grégoire IX, i, Paris 1896, no. 1995). The three appendices contain a collection of texts concerning the Dominican lectionary, Gregory ix's Ab oriente of 29 April 1233 addressed to the Dominican general chapter (Registres de Grégoire IX, no. 1271), and testimonia minora of Humbert concerning Dominic. It will come as no surprise to those familiar with Simon Tugwell's earlier publications that this book is a scholarly tour de force and a major contribution to thirteenth-century Dominican history.