86 (return) [ The Method of Scientific Investigation is an extract from the third of six lectures given to workingmen on The Causes of the Phenomena of Organic Nature in Darwiniana.]
87 (return) [ these terrible apparatus: apparatus is the form for both the singular and plural; apparatuses is another form for the plural.]
88 (return) [ Incident in one of Moliere's plays: the allusion is to the hero, M. Jourdain in the play, "La Bourgeois Gentilbomme."]
89 (return) [ these kind: modern writers regard kind as singular. Shakespeare treated it as a plural noun, as "These kind of knaves I knew."]
91 (return) [ Laplace (1749-1827): a celebrated French astronomer and mathematician. He is best known for his theory of the formation of the planetary systems, the so-called "nebular hypothesis." Until recently this hypothesis has generally been accepted in its main outlines. It is now being supplanted by the "Spiral Nebular Hypothesis" developed by Professors Moulton and Chamberlin of the University of Chicago. See Moulton's Introduction to Astronomy, p. 463.]
