1  2  3  4

1  _  _  _  _

2  _  _  _  _

3  _  _  _  _

4  _  _  _  _


ACROSS
1)  a geological formation consisting of an underground enclosure with access from the surface of the ground or from the sea
2)  imitate uncritically and in every aspect
3)  the imperial dynasty of china from 1368 to 1644
4)  mentally healthy; free from mental disorder


DOWN
1)  a river in east central england that flows past cambridge to join the ouse river
2)  the capital of western samoa
3)  english logician who introduced ____ diagrams (1834-1923)
4)  the boundary of a surface

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