[83] The Mark of Brandenburg. [84] It is to be regretted that Froebel has not developed this point more fully. He speaks of "die Betrachtung des Zahlensinnes in horizontaler oder Seiten-Richtung," and one would be glad of further details of this view of number. We think that the full expression of the thought here shadowed out, is to be found in the Kindergarten occupations of mat-weaving, stick-laying, etc., in their arithmetical aspect. Certainly in these occupations, instead of number being built up as with bricks, etc., it is laid along horizontally. [85] Carl Christian Friedrich Krause, an eminent philosopher, and the most learned writer on freemasonry in his day, was born in 1781. at Eisenberg, in Saxony. From 1801 to 1804 he was a professor at Jena, afterwards teaching in Dresden, Goettingen, and Munich, at which latter place he died in 1832. [86] Lorenz Oken, the famous naturalist and man of science, was born at Rohlsbach, in Swabia, 1st August, 1779. (His real name was Ockenfuss.) In 1812 Oken was appointed ordinary professor of natural history at Jena, and in 1816 he founded his celebrated journal, the _Isis_, devoted chiefly to science, but also admitting comments on political matters. The latter having given offence to the Court of Weimar, Oken was called upon either to resign his professorship or suppress the _Isis_. He chose the former alternative, sent in his resignation, transferred the publication of the _Isis_ to Rudolstadt, and remained at Jena as a private teacher of science. In 1821 he broached in the _Isis_ the idea of an annual gathering of German _savants_, and it was carried out successfully at Leipzig in the following year. To Oken, therefore, may be indirectly ascribed the genesis of the annual scientific gatherings common on the Continent, as well as of the British Association for the Advancement of Science, which at the outset was avowedly organised after his model. He died in 1851. [87] Those acquainted with the classical mythology will forgive us for noting that Charybdis was, and is, a whirlpool on the Sicilian shore of the Straits of Messina, face to face with some caverns under the rock of Scylla, on the Italian shore, into which the waves rush at high tide with a roar not unlike a dog's bark. [88] The peculiar dreamy boy, who by his nature was set against much of his work, and therefore seemed but an idle fellow to his schoolmaster, was thought to be less gifted than his brothers, and on that account fitted not so much for study as for simple practical life. In Oberweissbach he was set down as "moonstruck." All this is more fully set forth in the Meiningen letter, and the footnotes to it.