t 
Hyatt.] 124 FAprilS, 
Ontogkny 93-109 
Talile .)f l.Tiiis, used In- Hyatt 1888, and Buckman and Bather 1892, 93; 
proposed talile of icnns, 04; law of contiguous stages, 95; terms ending in 
"ology," '.to; epeniliryoiiic, epinepionic, etc., 95-96; other terms suitable as 
synoiuMiis, 9fi ; Ilaeckel's views, epacmc, acme, and paraeme, 96; anaplasis 
Oder aufbildung- (evolutio), 96; this term not suitable for some degenerate 
types, 97 ; juiiposal of paraplasis. 97 ; use of evolutio misleading, 97 ; metaplasis 
odor nmliildung (trausvohitio), 97; the use of transvolutio objectionable. 97; 
cataplasis oder riiekbildung (involutio), 97; cataplasis faulty in derivation, 
paraplasis being preferable, 97 ; term involutio objectionable, 98 ; use of "avolu- 
tion" objectionable, 98; use of terms evolution and development, 98; subdivi- 
sions of the senile or gerontic period, 98; discussion of catabatic, clinologic, 
hypostropliic, nostologic, nostic, 98-99,99, (note); paragerontic substage not 
atavistic or reversionary, 99; adoption of gerontic, 100; B.eecher, Jackson, 
Buckman, Bather, Blake, and Wiirtenberger, lOG; rediscovery of tachygenesis 
by Wiirtenberger, 101 ; discussion of term nepionic.lOl ; preferable to brephic, 
101; hypostropliic again, 101-302; the protoconch of Nautiloidea and Blake's 
stiictures, 102; discussion of term ananepionic, 102 ; term protosiphonula sub- 
stituted for asiphcmula, 103; protoconch again and Blake's views discussed, 
103; origin and nature of the coecuni, 103; apex of tlieEndosiphonoidea, 104; 
metauepionic substage, lOl; coecosiphonula, 104; characteristics of this sub- 
stage, 104-105; niacrosiphonula also included in this substage, 105; para- 
nepionic substage, 105; law of proportionate development or repetition of 
ancestral characters, 106; ananeanic substage, 106; inheritance of an acquired 
character through tachygenesis in this substage, 107 ; inheritance of ephebic 
Devonian characters of Temnocheilus in this substage in Carboniferous forms, 
107; annular lobe, 107; paraneanic substage, 108; ephebic stage, 108; gerontic 
stage, 108 ; prefix "phyl," 108; summary of terms for ontogeny and phylogeny, 
fable, 180; examples, 109. 
The Cycle . . 109-114 
I'liylura and cycle described, 109; terms ontocj'cle and phylocycle proj)osed, 
109 ; examples of cycles, 110 ; limits of ontocj'cle, 110-111; Maupas's researches, 
111; anaplasis, metaplasis, and iiarajilasis in Infusoria, 111; apparent absence 
of paraplasis in some forms, ITi; (lil'I'crence betwee.i aiiajilasis and jiaraplasis, 
112-113; the cycle dependent t(i a certniu extent upon the surroundings. 113 ; 
tl'.e cycle the standard in bioplastology, 113-114; discussion of cenogenism, 
113, (note); Ilaeckel's views erroneous 113, (note) ; aim of bioplastology, 114. 
.Stages ok MouriiOGENESis ..... 114-115 
Prefix "morplio" not desirable, 114; phylogeny of a characteristic, 114; 
transient characteristics not considered, 114-115. 
Kelations of the Nomenclatukes of Taxonomy and Bio- 
plastology . . . . . . 11 5-1 22 
Blake's views, 115-116; substitution of lineage for genus and mul.'iiion for 
species, 116; objections to this, 116; meaning of author's definition of a genus, 
116-117; possibility of the simultaneous origin of pliylocj-cles discussed, 117- 
118; the real significance of Professor Blake's propositions, 118; descriptive 
terms formerly employed by the author, 118-119; term form, 119; mutation 
equal to a change of specific value, 119; lineage equal to the term genus, 119; 
