61.  A normal gene produces a normal protein, then something goes wrong and the body starts turning out prions.

62.  A nylon webbing strap is wrapped around the frame and is then tightened using a ratchet action of the clamp head.

63.  A patterning system like the mind creates patterns which we then continue to use.

64.  A perfect circle then forms within which a powerful geometric shape used in worship appears.

65.  A political ideology, then, should be viewed as an abridgement of a particular tradition.

66.  A potential X-ray hazard could then exist.

67.  A range of phonological and other constraints are then examined quantitatively.

68.  A relaxed attitude to family size and the timing of births then cost little.

69.  A report is sent to the district attorney, who then Decides whether to pursue his own inquiry.