according to the second paragraph, members of the royal society discussed (medicine, biology, art), (theology, physics, classics) and (economics, astronomy, ancient history).
according to the fourth paragraph, members didn’t want to eliminate the works of (plato, copernicus, aristotle), but instead wanted to build on them.

1. According to the second paragraph, members of the Royal Society discussed BIOLOGY, PHYSICS AND ASTRONOMY. 
From the passage, it was recorded that, the members of the society met in certain days to discuss several subjects which include:physics, anatomy, geometry, navigation, statics, magnetics, chemics, mechanics, natural experiments, stars, etc.
2. According to the fourth paragraph, members did not want to eliminate the works of ARISTOTLE but instead built on it. 
From the passage, it was recorded that the members of the Royal Society had no intention to underrate the works of Aristotle; instead they have great esteem for him and considered him to be a very great man.