ust as drawn, with abrick wall surrounding it, the well-hole ventilated, andwith an upright pipe rising from its inlet to the groundline, it would form the very best house-drain discon-nector. No gas from the pipe c, which leads to thesewer could enter the house by way of the house-drainB, because… … tremely useful, provided the drains are disconnectedfrom the sewer. In certain cases—as, for example, ina laundry—it should have an aperture at the back, inorder to connect with a ventilating pipe leading to theexterior of the house (see fig. 49). The drain would,however, be more effectually…
