THE HISTORY OF CEEATION. 



CHAPTER XVI. 



PEDIGREE AND HISTORY OF THE KINGDOM OF THE 



PROTISTA. 



Special Mode of Carrying' out the Tlieoiy of Descent in the Natural System 

 of Organisms. — Constrnctiou of Pedigrees. — Descent of all Many. 

 Celled from Single. Celled Organisms. — Descent of Cells from Monera. — 

 Meaning of Organic Tribeo, or Phyla. — Number of the Tribes in the 

 Animal and Vegetable Kingdoms. — The Monophyletic Hypothesis of 

 Descent, or the Hypothesis of one Common Progenitor, and the 

 Polyphyletic Hypothesis of Descent, or the Hypothesis of Many 

 Progenitors. — The Kingdom of Protista, or Primaeval Beings. — Eight 

 Classes of the Protista Kingdom — Monera, Amoebae, or Protoplastee. — 

 Wliip-swimmers, or Flagellata. — Ciliated-balls, or Catallacta. — Labyrinth- 

 streamers, or Labyrinthnlese. — Flint-cells, or Diatomese. — Mucous-moulds, 

 or Myxomycetes. — Root-footers (Rhizopoda). — Remarks on the General 

 Natural History of the Protista : Their Vital Phenomena, Chemical 

 Composition, and Formation (Individuality and Fundamental Form). — 

 Phylogeny of the Protista Kingdom. 



By a careful comparison of the individual and the palseonto- 

 logical development, as also by the comparative anatomy 

 of organisms, by the comparative examination of their 

 fully developed structural characteristics, we arrive at 

 the knowledge of the degrees of their different structural 

 relationships. By this, however, we at the same time 

 obtain an insight into their true blood Telationship, which, 

 according to the Theory of Descent, is the real reason of the 

 structural relationship. Hence by collecting, comparing, and 



