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.
An inguinal hernia can be repaired through open surgery or laparoscopic surgery, according to the National Guideline Clearinghouse . A recent study of more than 1.5 million hernia operations found that the average cost for an open hernia surgery ranged between $4,200 and $6,200.