_Tractatus juridico-canonicus de irregularitatibus_; auctore Fr. E. A. Boenninghausen, juris utriusque Doctore et Presbytero Curato. Cum permissu R. D. Episcopi Monasteriensis, Monasterii. Typis et sumptibus, Theissengianis, 1863. The first part of this work, _De Irregularitatibus in genere_, treats of the following six points in as many chapters: 1o. Importance of the subject; 2o. on the idea of irregularity and incapacity; 3o. on the word irregularity, and its division into different species; 4o. of the efficient cause of irregularity; 5o. of its effects, with regard to Holy Orders and to Benefices; 6o. on dispensations from irregularities. The second part, entitled _De irregularitatibus ex delicto_, deals with irregularities arising--1o. from any defect occurring in baptism; 2o. from heresy, schism, and apostacy; 3o. from the violation of excommunications, suspensions, and interdicts; 4o. from the exercise of any of the sacred orders without having received that order. Here ends the first part. "This work", says the learned Bouix, "appears to us to be solid, methodical, and sufficiently complete. We have not as yet examined it with sufficient attention to be able to pronounce judgment on the perfect doctrinal exactness of its details; but we here thought it our duty to bring it under the notice of the clergy, and especially of professors in colleges". Transcriber's Notes: Simple spelling, grammar, and typographical errors were corrected. Punctuation normalized. Anachronistic and non-standard spellings retained as printed. Italics markup is enclosed in _underscores_. Gaelic markup is enclosed in #number signs#. Maltese cross indicated by [+]. End of the Project Gutenberg EBook of The Irish Ecclesiastical Record, Volume 1, October, 1864, by Society of Clergymen