Van Buren, Washtenaw, and Wayne to one. The dates for such extra examinations are fixed on the third Fridays of February, April, and September (Act 66, 1895).
Three grades of county certificates are granted, as follows:
FIRST GRADE CERTIFICATE. First grades are granted from the examinations of March and August and are valid for four years. The examination is in algebra, botany, geometry, general history, physics, arithmetic, grammar, United States history, civil government, geography, reading, penmanship, orthography, school law, theory and art of teaching, physiology and hygiene with reference to the effects on the human system of alcoholic drinks, stimulants, and narcotics.
All county certificates must be signed by the commissioner and at least one examiner (Act 34, 1893).
Without the indorsement of the Superintendent of Public Instruction, first grade certificates are valid only in counties where granted.
INDORSEMENT. To secure this indorsement the papers written by successful applicants must be forwarded by commissioners within ten days to said superintendent for examination and approval. If he approves and signs the certificate, it becomes valid throughout the state.
SECOND GRADE CERTIFICATE. Second grades are granted from the four regular examinations and are valid throughout the county where granted for three years. Candidates may select any two of the four studies—algebra, botany, general history, and physics—and are required to write on all the other branches excepting geometry.
THIRD GRADE CERTIFICATE. Third grades are granted from any public examination and are valid throughout the county where granted for one year. The branches required in an examination for a third grade certificate are all those, excepting the first five mentioned, in the first grade list.
For the purpose of limiting the number of third grade certifi-
