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Updated: May 20, 2025
Of voluntary capacities and powers the newborn infant possesses little more than the simplest unicellular animalcule, that is, about all it can do is to scent and swallow food. Its cerebral hemispheres are as yet blank slates, to be inscribed gradually by its conscious and voluntary exertions.
Protophytes. : 2. Algaria. Unicellular algae. : 2. Paulotomea. Palmellacea. Eremosphaera. 3 to 5. Protozoa. : 3. Lobosa. Amoebina. Amoeba Leucocyta. 3 to 5. Protozoa. : 4. Infusoria. Unicellular. : 4. Flagellata. Euflagellata. Zoomonades. 3 to 5. Protozoa. : 5. Blastaeades. Multicellular hollow spheres. : 5. Catallacta. Magosphaera, Volvocina, Blastula. 6 to 8.
The long road I have in mind is the long road of evolution, the road you and I have traveled in the guise of humbler organisms, from the first unicellular life in the old Cambrian seas to the complex and highly specialized creature that rules supreme in the animal kingdom to-day.
It is in the evolutionary process. The amalgamation of individuals into nationalities and empires is as much in the cosmic plan as the development of highly organized beings out of unicellular organisms. I believe this process will continue until humanity itself is so psychically knit together that, as a being, it will manifest some form of cosmic consciousness in which the individual will share.
It is clear that this morula reproduces for us to-day the simple structure of the multicellular animal that succeeded the unicellular amoeboid form in the early Laurentian period. In accordance with the biogenetic law, the morula recalls the ancestral form of the Moraea, or simple colony of Protozoa.
It includes the phenomena of conjugation and fertilization among both unicellular and multicellular organisms. ANABOLISM. See METABOLISM. ANAMNESIC. Pertaining to or aiding recollection. ANEMIC. Deficient in blood; bloodless. ANTHROPOMORPHISM. The attributing of human characteristics to natural, supernatural, or divine beings. ANTHROPOMETRY. Science of measurement of the human body.
This life has not evolved beyond the unicellular, or amoebic stage; and it will be only after the lapse of a long period of time, measured in Geological units, when more complex organisms will appear: and many of these periods will come and go before this planet's surface will have attained a proper development for the propagation of intelligences capable of being classed with the denizens of your Earth.
In my first efforts to construct the series of man's ancestors I drew up a list of, at first ten, afterwards twenty to thirty, forms that may be regarded more or less certainly as animal ancestors of the human race, or as stages that in a sense mark off the chief sections in the long story of evolution from the unicellular organism to man.
The life of the amoeba or any other unicellular organism is low compared with the life in more complex organisms, like the ant or bee. Man is the most highly developed living organism on the globe; yet his body is built up of innumerable cells, each of which might be described as a tiny life in itself.
In the simplest case, that of the unicellular animals, the cell divides, giving rise to two animals, each of which divides again, producing four, and these again, giving eight, etc. The rapidity of this multiplication is sometimes inconceivable.
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