Show Yeast Extract sp Speeds Growth Plant growth flowering and fruit ing have been greatly speeded up b by means of a yeast east extract in the laboratories laboratories lab lab- oratories of Professor ArtturI L Vir- Vir and Dr Synnove von Hausen of the University of Helsinki Pea vines thus treated started blooming in from 20 to 25 days das after planting while similar vines not given the yeast extract put forth their first flowers only after 30 days das The yield was greatly increased ased also plants given the extract always bore at least 50 50 per cent more pods than did the un un- un treated plants Earlier experiments have indicated that yeast contains some factor that causes cells to multiply faster Professor Pro Pro- fessor and Dr von Hausen are no now endeavoring to determine whether the general speeding up of growth and bearing i in their experiments ments was caused by the same factor They have reported the results of their experiments experiments' as thus far Com completed corn com to the British scientific journal jour nal naJ Nature I I |