John Harvey Kellogg and in 1898 released the first batch of Sanitas Toasted Corn Flakes. A modified version with a longer shelf life was released in 1902. By that time, both "Granose Biscuits" and "Granose Flakes" were available. Will Kellogg continued to develop and market flaked cereal. When he proposed adding sugar to the flakes, John would not agree to the change. So, in 1906, Will started his own company, the Battle Creek Toasted Corn Flake Company. This marked the start of a decades-long feud between the brothers. Will's Battle Creek Toasted Corn Flake Company would eventually became the Kellogg Company, while John
John Harvey Kellogg the "Herald" where the book was typeset and ready to print. When it finally appeared in 1903, the book was sharply criticized by White for what she considered its many statements of pantheism. Over the next few years, there was increasing conflict between Kellogg, General Conference President A. G. Daniells and others. In 1907, Kellogg was "disfellowshipped", as part of a schism that split the church. Kellogg retained control of the Battle Creek Sanitarium and the American Medical Missionary College, and continued to promote Adventist ideas of health and well-being at those institutions. In later life, Kellogg spoke positively of