When two People may Sleep Together Advantageously.-- Two people may often occupy the same bed to the decided benefit of both. For instance, when one is by nature full of positive electricity or magnetism, while the other's body is negative. In this case there is an insensible and gradual interchange of vital currents. The excess of positive goes out to the negative body, and it in turn gives of its over supply of negative to the positive body, and thus a normal and healthful condition is brought about. This must be the explanation of the numerous instances where a weak and semi-invalid woman marries a man not considered unusually strong and both become healthier and able to endure far more than either could before marriage. Each gives to the other without losing any essential part of themselves.