”Your work on Euclid seems admirable, and is a great improvement in most ways on its predecessors. It is a great thing to call the attention of students to the innumerable variations in statement and simple deductions from propositions.…I should have preferred some modification of Euclid to a reproduction, but I suppose people cannot be got to agree to any.” From H. J. Cooke, Esq., The Academy, Banbridge. ”In the clearness, neatness, and variety of demonstrations, it is far superior to any text-book yet published, whilst the exercises are all that could be desired.” From James A. Poole, M.A., 29, Harcourt-street, Dublin. ”This work proves that Irish Scholars can produce Class-books which even the Head Masters of English Schools will feel it a duty to introduce into their establishments.” From Professor Leebody, Magee College, Londonderry. ”So far as I have had time to examine it, it seems to me a very valuable addition to our text-books of Elementary Geometry, and a most suitable introduction to the ‘Sequel to Euclid,’ which I have found an admirable book for class teaching.” From Mrs. Bryant, F.C.P., Principal of the North London Collegiate School for Girls. ”I am heartily glad to welcome this work as a substitute for the much less elegant text-books in vogue here. I have begun to use it already with some of my classes, and find that the arrangement of exercises after each proposition works admirably.” From the Rev. J. E. Reffé, French College, Blackrock. ”I am sure you will soon be obliged to prepare a Second Edition. I have ordered fifty copies more of the Euclid (this makes 250 copies for the French College). They all like the book here.” From the Nottingham Guardian. ”The edition of the First Six Books of Euclid by Dr. John Casey is a particularly useful and able work.…The illustrative exercises and problems are exceedingly numerous, and have been selected with great care. Dr. Casey has done an undoubted service to teachers in preparing an edition of Euclid adapted to the development of the Geometry of the present day.” From the Leeds Mercury. ”There is a simplicity and neatness of style in the solution of the problems which will be of great assistance to the students in mastering them.…At the end of each proposition there is an examination paper upon it, with deductions and other propositions, by means of which the student is at once enabled to test himself whether he has fully grasped the principles involved.…Dr. Casey brings at once the student face to face with the difficulties to be encountered, and trains him, stage by stage, to solve them.” From the Practical Teacher. ”The preface states that this book ‘is intended to supply a want much felt by Teachers at the present day–the production of a work which, while giving the unrivalled original in all its integrity, would also contain the modern conceptions and developments of the portion of Geometry over which the elements extend.’