There are, further, a few drawings which may be regarded as studies--studies in perspective, in the five orders, and in the style of foreign architects. For there is no doubt that Thorpe studied books on architecture, both Italian, French, and Dutch, of which a considerable number had been published during the latter half of the sixteenth century. His exercise in the five orders is evidently drawn from an Italian publication, which, however, has not yet been identified. He has copied at least three designs from a French source, one of Androuet du Cerceau's books, "Les plus excellents bastiments de France," published in 1576-79. One of these designs is the Château of Anssi-le-Franc, of which he gives the plan on page 75, and part of the elevation on page 76. The plan is copied accurately except in one or two trifling particulars, and so also is the elevation (Figs. 213, 214); but to the latter he has added three sketches of turrets, which do not appear in the original, and which are designed in the Dutch rather than the French style. On each side of the plan he has sketched in pencil the main lines of another plan founded on the original, but which looks as though it were meant to be adapted to English uses. Another plan which he copied from Du Cerceau (on pages 77, 78) is the Château de Madrit in the Bois de Boulogne. This is, with one little exception, line for line like the original, but, curiously enough, here again he has made notes in pencil indicating how he would have adapted it for English habits. The third instance is part of the plan and elevation of the "theatre" at Saint Germain (on pages 165, 166). [Illustration: 214.--THE CHÂTEAU OF ANSSI-LE-FRANC COPIED FROM DU CERCEAU, BUT WITH THREE TURRETS ADDED (PAGE 76 OF THORPE'S BOOK).]