I have a bottle which is dark green in colour. There is a label in the bottle on which it is written East India Company * UK and on the two sides there is a picture of a scorpion. It contains around 650 ml of water. What is striking is that when water is pourted in the bottle, the water level inside the bottle rises within a span of 7-8 minutes to that of one inch and in another 7 minutes it rises half inch, i.e. in 15 minutes, the water level rises to that of one and half inch. There are no other functions except for what is mentioned above.