Aboion stick used in criminal aboion causes aboion by the mechanism of -

Ref: Synopsis of forensic medicine and toxicology (K.S.Narayan Reddy) 28th edition, page no. 214 Aboion Stick: This is a thin wood or bamboo stick, from 12 to 13 cm long. This stick is wrapped round at one end or for a greater poion of its length with cotton-wool or a piece of cloth, and socked with juice of marking nut, calotropis, abrus precatorius, asafoetida or paste made of arsenious oxide, arsenic sulphate, red lead etc. It is introduced into the vagina or is of uterus by untrained midwives, and retained there till uterine contraction begin. The uterus contract, cervix dilate and foetus gets out.