Studied at Guy's and St Thomas's Hospitals and then practised at 249 Blackfriars Road, London. He was Surgeon to the Royal Infirmary for Children, Medical Attendant to St Saviour's Union Workhouse, and Medical Examiner to the Medical Invalid and General Assurance Society. In old age he retired to Melton Mowbray, and died on June 18th, 1882. Doubleday published in the *London Medical and Physical Journal* (1825, liv, 380) a "Case of Uterine Haemorrhage, Successfully Treated by the Operation of Transfusion". He followed the method described by C Waller shortly before in the same journal (p.273). A woman had suffered during labour from excessive haemorrhage and Waller had called Blundell into consultation. The woman's pulse was 120, and hardly to be felt. Blundell exposed her vein at the elbow and passed a blunt needle under it to control haemorrhage from below. He then let some of the husband's blood into a tumbler, drew some up into a 2oz syringe, and injected it into the woman's vein. In all 14 oz of the husband's blood were injected, the pulse became perceptible, its rate 110, and the patient recovered. Doubleday called in Blundell to a similar case. The patient six hours after the haemorrhage seemed almost dead; after 6 oz of her husband's blood had been injected some improvement was noticed; after 14 oz there was a marked pulse, and the patient recovered consciousness. Considerable phlebitis followed, which extended up to the axilla and then subsided; there was also an excessive flow of milk from the breasts. On the seventh day the woman was described as quite well except that the incision in the arm had not yet healed.