22. Why, then, could not beings of a complex organization be formed in the same manner? That these beings have not always existed is a positive fact: then they must have had a beginning. If moss, lichens, zoophytes, infusorians, intestinal worms, and others can be spontaneously produced, why is it not the same with trees, fishes, dogs, and horses?
For a time investigations rest here. The conducting thread is lost, and, until that be found, the field is open to hypothesis. It would then be imprudent and premature to give any views on the subject as absolute truths.