What is spilsbury?

Some articles on spilsbury:

George Joseph Smith - Solution
... For weeks Spilsbury pondered over the bathtubs and the victims' measurements ... French's description of Bessie Williams when he found her in the bathtub, Spilsbury reasoned that Smith must have seized her by the feet and suddenly pulled them up toward himself, sliding the upper part of the ... Thus was Spilsbury's theory confirmed ...