Eight lectures are devoted to the description of the various instruments, the method of adjusting their errors, and the manner of using them, as well as to the different ways of proceeding in topography; touching also on the various modes of measuring distances, with descriptions of the compass, plane table, and instruments used for leveling, and on the taking observations for and preparation of sections, and the orientation of maps. Four preparatory lectures are given, showing the manner in which the students should proceed when on the ground to make a survey of small extent. Two lectures relate to the methods that should be employed in making a survey of considerable extent, and on the appropriate scales. Two lectures on military reconnaissance plans; instruments and scales employed. Two preparatory lectures relate to the execution of a reconnaissance plan, in which the operations of a sham siege are intended to be recorded. _Second Section.--Practical Lectures or Exercises._ The object of these lectures, which take place on the glacis of the fortification, is to show the students the practical modes of using the instruments, and the precautions which must be taken, together with the most elementary proceedings in topography. They are given to ten or twelve students at the same time, and the Professor is assisted by an officer of the staff. Each lecture lasts two and a half hours. _Third Section.--On the Execution of Topographical Surveys._ The object is to familiarize the students with the use of the principal instruments and the principal operations, and they comprehend out-of-door work, of which the results are sketches, registers, and minutes made in pencil, and in the construction of plans, and inking in of the minutes in the Halls of Study. The out-of-door work is performed under the superintendence of officers of the staff, who assist the students in their work. The construction of the plans is not commenced until the pencil minutes have been examined by the Professor. These exercises comprise:-- 1st and 2d. Construction of plans by the aid of the compass. 3d. The plan of a fortification made with the plane table. 4th. The determination of the variation of the compass. 5th. The execution of a second survey by the aid of the compass. 6th. “ “ rapid survey by pacing the distances. 7th. “ “ reconnaissance survey. 8th. “ “ an itinerary and reconnaissance sketch. 9th. The preparation of a plan on which the whole of the operations of a sham siege may be laid down, as the works of attack and defense proceed. RECAPITULATION FOR THE ARTILLERY AND ENGINEERS. [KEY] Cr Credits for Lectures. NL Number of Lectures. +A With application. -A Without application. T Total Credits. I Number of Interrogations.