"All the fixed agents must hold not merely salaried positions (that is, in offices, workshops, etc), for they might at any time be dismissed from their posts, and in that case would no longer have any plausible reason for remaining at their points of observation. Such positions, too, possess considerable disadvantage for our agents, in that they restrict their actions and hamper their freedom of going and coming, and bring them too much under notice. "For these reasons, it must be laid down as a condition of the employment of a spy that he shall be obliged to keep some kind of an establishment, which he may select so long as it is, at least externally, thoroughly in keeping with the commercial or other requirements of the country in which he is engaged. Whatever establishment it be, whether an office for the settlement of disputed claims, or a property register, or a business of a purely commercial land, such as groceries, cafes, restaurants, hotels, etc, it must be soundly established and possess a substantial good-will. "It must be borne in mind that it is necessary for our agents to inspire confidence in circles where they have their centre of action, and to inspire that confidence by outward indications of a commonplace bourgeois existence; by tactful charity and by making themselves useful in societies, associations, communities, and so forth; and by acquiring strong social positions, so that they may be well received and regarded in all quarters. "While we must limit the expenditure which our agents are permitted to incur, it is necessary that we should give them absolute assurance that any deficit of the undertaking which they carry on would be made good by the service under the head of general expenses."