what did his aforesaid law state?
It describes how the pressure of a gas tends to increase as the volume of the container decreases.
Boyle's law
Boyle's law, also referred to as the Boyle–Mariotte law, or Mariotte's law (especially in France), is an experimental gas law that describes how the pressure of a gas tends to increase as the volume of the container decreases. A modern statement of Boyle's law is:

The absolute pressure exerted by a given mass of an ideal gas is inversely proportional to the volume it occupies if the temperature and amount of gas remain unchanged within a closed system.

who gave the first lecture of the royal society UNANSWERABLE what is the objective of this society? Promoting science and its benefits, recognising excellence in science, supporting outstanding science, providing scientific advice for policy, fostering international and global co-operation, education and public engagement. when was it founded? 28 November 1660 who founded it? Robert Boyle. what are their various activities? The society acts as an advisor to the UK Government, the European Commission and the United Nations on matters of science. It publishes several reports a year, and serves as the Academy of Sciences of the United Kingdom. who is the above mentioned person? An Anglo-Irish natural philosopher, chemist, physicist, and inventor. He is largely regarded today as the first modern chemist. He is best known for Boyle's law what was his role as a scientific investigator? He carried out the principles which Francis Bacon espoused in the "Novum Organum"
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Boyle's law [SEP] Introduction
Boyle's law, also referred to as the Boyle–Mariotte law, or Mariotte's law (especially in France), is an experimental gas law that describes how the pressure of a gas tends to increase as the volume of the container decreases. A modern statement of Boyle's law is: The absolute pressure exerted by a given mass of an ideal gas is inversely proportional to the volume it occupies if the temperature and amount of gas remain unchanged within a closed system. Mathematically, Boyle's law can be stated as: