[36.]—Attack on Algiers.

[37.]—Attack on San Juan d'Ulloa.

[38.]—Attack on St. Jean d'Acre.

[39.]—Plan of a regular bastioned front of a fortification.

[40.]—Section of do. do.

[41.]—Tenaillons.

[Fig. 42.]—Demi-tenaillons, with a bonnet.

[43.]—A horn-work.

[44.]—A crown-work.

[45.]—A redan.