This book investigates the biblical text of Codex Washingtonianus, also called the Freer Gospels, Codex W and GA 032. There are numerous distinctive features in this early and important gospel book, including the differing affiliation of its text in separate sections (known as block mixture). The study examines and evaluates the blocks of text in this manuscript through the extensive application of the technique of quantitative analysis, which sheds light on the textual relationship between Codex Washingtonianus and other gospel manuscripts. Paratextual features, orthographic variations, and singular readings are also described and analysed. This book thus functions as an investigation of the phenomenon of block mixture in itself as well as the character of this particular manuscript, confirming many of the findings of previous scholarship and providing new data from the context of modern research.