What was JJ Thomson Atomic theory? Joseph John Thomson discovered the electron in 1897. In 1904,  Thomson suggested a model of the atom as a sphere of positive  matter in which these electrons are positioned â¦by electrostatic  forces.
Cost of Perineal Hernia in Dogs. Stool softeners for dogs are usually $15 for 40 soft chews. Consult your veterinarian before trying human stool softeners on your dog. Enemas ($4 for a 4 pack) are another option.
According to Hodgett, synthetic plastic mesh adds about $50 to $100 to the procedure's cost. Biological mesh could add more than $8,000, he said. In the United States, more than 350,000 abdominal hernia repair surgeries are performed each year, according to background information in the study.