2. Without the constitution of one or other of these servitudes, no proprietor can build so as to throw the rain that falls from his house directly on his neighbor's grounds; for it is a restriction upon all property, nemo pro-test immitere in alienum; and he who in building breaks through that res-traint, truly builds on another man's property; because to whomsoever the area belong's, to him also belongs whatever is above it: cujus est solum, ejas est usque ad caelum. 3 Burge on the Conf. of Laws, 405. Vide Servitus Stillicidii. Inst. 3, 2, 1; Dig. 8, 2, 2.