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.
Open Inguinal (groin) Hernia Repair (one side): $4,430. â most patients select this repair due to the lower cost and equivalent safety compared to the laparoscopic repair. The most common type of hernia in the United States is an inguinal (or groin) hernia.