In the earlier accepted notion of direct segmentation, usually known as the schema of Remak, division was described as commencing in the nucleolus, as thereafter spreading to the nucleus, and as ultimately implicating the cell-substance.
The catechisms of Bellarmine (1603) and Bossuet (1687) had considerable vogue, and a summary of the former known as Schema de Parvo was sanctioned by the Vatican council of 1870.
But it is to be recollected that, according to Hume, an idea is actually a representation or individual picture, not a notion or even a schema, and that he never claims to be able to extract the predicate of a geometrical judgment by analysis of the subject.
He postulates his unity in senses and at stages in which it is inadmissible, and so supplies only a schema of relations otherwise won, a view supported by the way in which he injects certain determinations in the process, e.g.
At most it was thought to establish a schema of formal unity which might serve as a regulative ideal.