THE EFFECT OF REDUCED ATMOSPHERIC PRESSURE AND SEVERAL GASES ON THE TICKS ORNITHODOROS PAILLIPES BIR.

摘要

The effect of reduced atmospheric pressure on ticks. From 10-18 ticks (males and females) were placed in chambers with one outlet tube.nEffect of oxygen on ticks. Oxygen (from an oxygen cylinder) was passed through the chambers with two outlet tubes for 15 minutes.nEffect of hydrogen on ticks. The gas was passed through the chambers for 15 minutes from a KIP apparatus [probable meaning of KIP -control and measuring instruments].nEffect of nitrogen on ticks. The nitrogen was taken from a cylinder (it contained 1.5-2% oxygen).