A. Welby Pugin 
True Principles of Pointed or Christian Architecture [PDF ebook] 
Set Forth in Two Lectures Delivered at St. Marie’s, Oscott

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. One of the greatest defects of St. Paul’s, London, is its fictitious dome. The dome that is seen is not the dome of the church, but a mere construction for effect. At St. Peter’s the dome is the actual covering of the building, and is therefore constructed in that respect on the true principle but, as will be perceived by the annexed section, the upper part of St. Paul’s is mere imposing show, constructed at a vast expense without any legitimate reason.