For the whole. Si plures sint fidejussores, quotquot eruni numero, singuli in solidum tenentur, if there be several sureties, however numerous they may be, they are individually bound for the whole debt. Inst 3, 21, 4. In parte sive in solidum, tor a part or for the whole. Id. 4, 1, 16. See Id. 4, 6, 20; Id. 4, 7, 2.