Q1:

S₁: This weather-vane often tops a church spire, tower or high building.

P : They are only wind-vanes.

Q : Neither alone can tell us what the weather will be.

R : They are designed to point to direction from which the wind is coming.

S : Just as the barometer only tells us the pressure of air, the weather-vane tells us the direction of wind.

S₆: The weather-vane can, however give us some indication of other.

The Proper sequence should be:

Question

S₁:	This weather-vane often tops a church spire, tower or high building.
P :	They are only wind-vanes.
Q :	Neither alone can tell us what the weather will be.
R :	They are designed to point to direction from which the wind is coming.
S :	Just as the barometer only tells us the pressure of air, the weather-vane tells us the direction of wind.
S₆:	The weather-vane can, however give us some indication of other.

The Proper sequence should be:

Ordering of Sentences