... in the near future the specific germs of these diseases also.STRUCTURE AND DEVELOPMENT OF PARASITESCHAPTER I 20 The group of parasites consists of two general classes, the vegetable, and the ... epidemics has become possible, and sickness isno longer regarded as a punishment for sin.Actual care of the sick, both in homes and in hospitals, has always been one of the responsibilities of women. The ... tissue weaknesses of the body seem to be hereditary, and in consequence onefamily is more susceptible to digestive disorders, another to diseases of the lungs, a third to deafness, and so on. ...