(1) As the androids began their attack, Ravena noticed that their eyes were as white as chalk .

(2) In the north-east is agricultural land on chalk or limestone well drained by rivers.

(3) Deposits of their skeletons produced much of the Mesozoic chalk and limestone.

(4) I walked up to the front of the room, where the chalk board was, and grabbed a piece of white chalk .

(5) Here on planet Earth white chalk on black slate provides plenty of contrast.

(6) Madeleine explained the classrooms in St Bede's sister school in Tanzania were very basic with blackboards, chalk and windows without glass.

(7) A deposit that is similar to chalk is diatomaceous chert.

(8) The whole class stopped, their eyes on me, and the teacher turned away from the board and pointed a short stub of blackboard chalk at me.

(9) I got up and found a perfect piece of white chalk waiting for me.

(10) Taking only a moment to chalk his cue, he got down on the table and potted the five.

(11) Would their children chalk it in doorways before they knew its meaning as a trademark?

(12) While most people consider chalk to be white in colour, when weathered it can be grey and red (due to iron staining).

(13) Winter sweet, Chimonanthus praecox, will grow quite happily on chalk or limestone soils and fill the garden with spicy winter fragrance.

(14) While the factory's existence is unmissable by its towering chimney that dominates the skyline, the location of its chalk quarry near the White Horse is rather more hidden.

(15) It passes upwards into almost flat-lying white coccolith chalk with parallel lines of black flint nodules.

(16) With white chalk , a recent innovation, he wrote an E on the slate.

(17) You know what I mean, those blue cubes that you use to chalk up your cue when you're playing snooker or pool in an attempt to make it look like you know what you're doing.

(18) Sprawled on the floor, her skin as white as chalk , her sightless eyes staring up the ceiling, was the body of an old lady.

(19) Moreover, through our cities and agriculture we are constantly varying the surface reflectivity of the Earth, as with the exposure of white chalk at Gravesend.

(20) U251cu00f6u251cu00e7u251cu2510Some used to throw chalk or even the blackboard rubber at you if you wouldn't stop talking,u251cu00f6u251cu00e7u251cu00fb she says.