V. Applications filed previously to the adoption of these regulations must be renewed or perfected in accordance therewith to entitle them to consideration. No applications for appointment as day or night inspectors in the custom-house from persons under 21 years of age, or for other positions under these regulations from persons under 18 years of age, will be considered. In compliance with section 1031 of the Treasury Regulations now in force, persons over 45 years of age are not eligible to any group the lowest grade of which is confined to persons receiving an annual salary of less than $1,800. This prohibition, however, shall not be applied to those who have been honorably discharged from the service and are otherwise qualified. VI. All applications upon their receipt will be carefully examined by the board of examiners, and those which do not conform in every particular to the foregoing requirements, and such as show that the applicants are manifestly not qualified for the duties of the position desired, will be rejected and the applicants so notified. All other applicants will be designated as eligible for examination, and will be so notified. Inasmuch as applications are to be made in writing and each case is to be decided upon its merits, personal importunity will have no weight. VII. Not less than five days prior to each examination a notification to appear at a time and place to be stated will be mailed to the eligible candidates, unless it shall be found impracticable to examine all of them, in which case a practicable number will be selected under the second regulation[30] for the civil service promulgated April 16, 1872, and notified to appear for examination. Those not selected for examination will remain on the eligible list. If any person notified to appear shall be unable to do so on account of sickness or other causes, he must promptly advise the board of examiners, in person or by mail, of his inability to attend, and his name will remain upon the eligible list; but any person attending an examination will not be allowed to subsequently plead sickness or other disabling causes as an excuse for defects in examination. VIII. All candidates for appointment to positions the annual salary of which is $1,200 or more, who shall appear in accordance with such notification, will be subjected to a competitive written examination upon the following subjects: (1) Copying from dictation; (2) arithmetic--fundamental rules, fractions, proportion, percentage and interest, reduction; (3) elements of accounts and bookkeeping; (4) geography, history, and government--general questions, principally such as relate to the United States; (5) elements of English grammar, chiefly orthography and syntax; (6) writing and briefing letters; and (7) penmanship.