what are some early experiments regarding the second mentioned gas?
Relationship between combustion and air, air is necessary for combustion, fire requires only a part of air etc
Oxygen
relationship between combustion and air 
what is tropical storm arlene (1981)? It was a rare off-season tropical cyclone. what is the physical structure of this above type of cyclone just mentioned? Its formation was unusual, originating from a tropical disturbance that crossed from the eastern Pacific Ocean into the Caribbean Sea; few Atlantic hurricanes develop in this manner. what is the seasonal variation seen in this last mentioned hurricane? Approximately 97 percent of tropical cyclones that form in the North Atlantic develop between the dates of June 1 and November 30 and the official end has shifted from its initial date of October 31. what kind of intensity it has? It is determined by either the storm's maximum sustained winds or lowest barometric pressure. what are the steering factors of this hurricane? The surrounding flow throughout the depth of the troposphere, the atmospheric flow affects the path of a hurricane across the ocean etc what is the composition of the above mentioned sphere? Nitrogen, oxygen, argon, carbon dioxide etc
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Oxygen [SEP] Early experiments
One of the first known experiments on the relationship between combustion and air was conducted by the 2nd century BCE Greek writer on mechanics, Philo of Byzantium. In his work "Pneumatica", Philo observed that inverting a vessel over a burning candle and surrounding the vessel's neck with water resulted in some water rising into the neck. Philo incorrectly surmised that parts of the air in the vessel were converted into the classical element fire and thus were able to escape through pores in the glass. Many centuries later Leonardo da Vinci built on Philo's work by observing that a portion of air is consumed during combustion and respiration.