PREFACE.
the memory of her sister, a lovely child, who died at the age of ten years from blood poisoning, the result of adjacent sewage being allowed to percolate into a public well used for culinary purposes.
In the early part of the year 1868 this fearful and highly contagious disease broke out in the village of Wormley, Herts, and continued for many months spreading consternation among the poorer class of its
