As a publication, OPCS-4 is split into two volumes; a tabular list (Volume I) and an alphabetical index (Volume II). An electronic version is also available. However, a number of supplementary publications are also used by coding staff.
The prize was claimed in 1864 by Louis Pasteur, as he published the results of an experiment he did to disproved spontaneous generation in these microscopic organisms. 1  Observation(s): From Needham s and Spallanzani s experiments, it was known that soup that was exposed to the air spoiled bacteria grew in it.
Through the centuries, the notion of spontaneous generation gave rise to a wide variety of exotic beliefs, such as that snakes could arise from horse hairs standing in stagnant water, mice from decomposing fodder, maggots from dead meat, and even mice from cheese and bread wrapped in rags and left in a corner.