A constant intellectual alertness is required.
Till about midday he followed the course of the action with his usual alertness; then he appears to have been overcome by a / Merezhk Grodno Niel Minsk Pultusk Modlin Memel Dunaburg Vilkomir Vilna Oka Ostrolenka Scale.
Preparation, both military and moral, alertness and patience were his constant theme.
In the case of the common drone-fly, Eristalis tenax, the individual, from a sedentary maggot living in filth, without any relations of sex, and with only unimportant organs for the ingestion of its foul nutriment, changes to a creature of extreme alertness, with magnificent powers of flight, living on the products of the flowers it frequents, and endowed with highly complex sexual structures.
Beyond a doubt he was not without a certain moral timidity contrasting strangely with his eager temperament and alertness of intellect; but, though he was not cast in a heroic mould, he must have been one of the most amiable of men.
Their first cost is great and they are dangerous for new men, as they require constant alertness, presence of mind, and a certain knack in using them.
Though he lacked the brilliant qualities of his rival Wallqvist, Nordin had the same alertness and penetration, and was infinitely more stable and disinterested.
He must be in touch with the actual life of the community he is studying, and cultivate " that openness and alertness of the mind, that sensitiveness of the judgment, which can rapidly grasp the significance of at first sight unrelated discoveries or events."