────────────────┴─────────────┴─────────────┴────────────────────────────────────────────── “The list of stars,” says Captain Yolland, “selected for observation fell within the parallels of declination of 37° 38´ and 69° 54´. About two-thirds of this number were originally chosen, so as to admit of a continuous series of observations being made when the weather proved favourable throughout the night, and two observers were for some time employed with the instrument, who relieved each other after an interval of several hours’ work. The observations were frequently carried on continuously for upwards of eight hours, but six hours’ constant observing was reckoned a good night’s work for one person, in consequence of the fatigue caused by his having to ascend twice to the table to make each complete or double observation.”[55] In the course of the service additional stars, not originally selected for observation, were occasionally observed, some of which were not found in the works of the best authorities.[56] Two men, ready penmen, were also employed in booking, and afterwards copying, the observations on the skeleton forms, for transmission to the map office at Southampton, where the necessary computations in connection with the observations, were carried out and completed under the direction of Captain Yolland, R.E. It would be out of place here to make any copious detail of the employment of the sappers on this special duty, belonging as it properly does to the history of the operation, and being so amply recorded in Captain Yolland’s Sector Volume; but exception may fairly be taken to a few particulars in the personal services of the sergeant, which may prove interesting to the reader, and induce other non-commissioned officers in the corps to render themselves not only useful to their officers, but to deserve, in executing any important duty for which they may be selected, their confidence and approbation.