In 1844 he was elected ordinary professor of higher mechanics and astronomy, a position which he held till his death on the 26th of September 1868.
From July to October the level of the Senegal shows a series of fluctuations, with, however, a general increase till the end of August or beginning of September, when the maximum occurs.
Blesdijk's Historia (not printed till 1642) accuses Jorisz of having plures uxores.
Autumn is warmer than spring, especially in the coastal regions, and this is exaggerated in the eastern region by local land winds, which replace the cool sea-breezes of summer: overcoats are ordinarily worn in Spain and Italy till July, and are then put aside till October.
When Ibn Tumart died in 1128 at the monastery or ribat which he had founded in the Atlas at Tinmal, after suffering a severe defeat by the Murabtis, `Abd-el-Mumin kept his death secret for two years, till his own influence was established.