This section is from the book "Modern Buildings, Their Planning, Construction And Equipment Vol5", by G. A. T. Middleton. Also available from Amazon: Modern Buildings.
In Gothic architecture it is customary to finish the gable apices of buildings with some form of ornamentation. These may take the form of simple fleur-de-lis, or may be further elaborated in the form of pinnacles ornamented with crockets of foliated design (see Fig. 171).
An example of a pinnacle is also given in the elevation of the tower to Tooting Wesleyan Church (Fig. 150).