February 3rd, 1978
I administrated Progenitor to 4 leeches. Their will to survive leads them first to parasitism and predation. Then they breed and multiply. Such a single-minded biology makes them attractive candidates for bio-weapons research. Although they appeared to writhe around in pain at first, they soon settled down. Afterward, no major changes were observed.

February 10th, 1978
It has been 7 days since the administration of Progenitor. There has been rapid growth to double their former size and signs of transformation are emerging. Spawning has also been successful. They doubled their numbers in only an hour, but their ravenous appetites led them to cannibalism. I hastened to increase the food supply but had already lost 2 of them.

March 7th, 1978
I provided them with live food, but lost half when the live food fought back. However, the leeches are learning from experience and are beginning to exhibit group attack behaviour. They are also ceasing cannibalism. Their evolution is exceeding expectations.

April 22nd, 1978
The leeches no longer exhibit individual behaviour, even when not feeding. They move as a collective. They consume everything I offer with remarkable efficiency.

April 30th, 1978
An employee has stumbled onto my experiments. Can a human be a food source? How will the leeches respond?

June 3rd, 1978
A day worthy of commemoration. Today they began to mimic me! Surely they recognize their father... Wonderful children. No one will take you away...