Topographic mapping (aerial and conventional)

Let’s check some lists

Behind this first charging demon trailed nineteen others, similar in all respects, but, as I learned later, bearing individual characteristics peculiar to themselves; precisely as no two of us are identical although we are all cast in a similar mold.

• This picture, or rather materialized nightmare, which I have described at length, made but one terrible and swift impression on me as I turned to meet it.
• Unarmed and naked as I was, the first law of nature manifested itself in the only possible solution of my immediate problem, and that was to get out of the vicinity of the point of the charging spear.
• Consequently I gave a very earthly and at the same time superhuman leap to reach the top of the Martian incubator, for such I had determined it must be.
• My effort was crowned with a success which appalled me no less than it seemed to surprise the Martian warriors, for it carried me fully thirty feet into the air and landed me a hundred feet from my pursuers and on the opposite side of the enclosure.

I alighted upon the soft moss easily and without mishap, and turning saw my enemies lined up along the further wall.