be distinguished from a boarding house where each member pays a sum for his board and lodging calculated on commercial lines. The general principle regarding the finance of a household is ###hat the members make payments towards the household expenses mor ###r less according to their ability. Some members of the ###ousehold may contribute nothing, others a small amount, and othe### ### substantial amount. All share alike, however, in the common ###enefits. The second point is that household expenditure is separable into two par###s.