The world's first known test-tube baby was born last night.

The baby, a 5-pound, 12-ounce girl, was described as in "excellent condition" by doctors at Oldham General Hospital.

"Her condition at birth was normal," a hospital statement said.

The child, who was due Aug. 18, was delivered by caesarian section.

The child is refered to as a test-tube baby because it was conceived in a laboratory when British Gynecologist Patrick Steptoe removed an egg from the child's mother and fertilized it with the father's sperm.

The mother, Mrs. Lesley Brown, 32, of Bristol, has defective falopian tubes, which would normally carry a fertilized egg to the womb.Steptoe bypassed the defective tubes by fertilizing the egg in a laboratory and implanting it in Brown's womb.

Brown has been trying to have a baby for 10 years.

It was not known whether Brown's husband, John, 38, was with her during birth, nor why the child was delivered early.

Laboratory fertilization has been tried previously, but have never succeeded.

The case drew enormous attention earlier this month when it was learned that The London Daily Mail had obtained exclusive rights to the baby's story, raising a few eyebrows and winning the envy of the rest of Britain's penny press.

Steptoe and Dr. Robert Edwards have been working on the technique of laboratory fertilization for 12 years.

The Browns have not yet announced a name for the child.