In the 19th century new ideas had emerged of how the brain functions. There were two different theories at the forefront during this period. Camilo Golgi, best known for creating the Golgi stain, had theorized that the brain was circulatory network such as the heart and that neurites of different neurons were all connected. Another scientist Santiago Ramon y Cajal believed that the brain worked via contact rather than connection. He theorized that neurites of different neurons are not continuous with each other and communicate by contact. The theory that was proposed by Ramon y Cajal would be known as the Neuron Doctrine. However, his theory was not accepted until proven much later by the electron microscope, and is now universally accepted
Comments
typos
The last sentence doesn't have a period at the end. Also the y in Ramon y Cajal, should b capitalized and have a period at the end to indicate that it's his initial.
There are some gramatical
There are some gramatical errors that decrease the coherent flow of your paragraph. For instance, instead of "has emerged" or "had theorized," you can just omit the "has" and "had." You switched up your tenses several times. It's best to stick to one type
The phrase "the brain was
The phrase "the brain was circulatory network such as the heart and that neurites of different neurons were all connected" is unclear and needs to be rephrased. Are you saying that the brain is a circulatory network?