Wilder, Neural Terms. 223 



§36. Indirect Pecilonymy. — But when a certain substantive 

 is used in one passage, and in another an adjective or other de- 

 rivative from a different substantive, the pecilonymy is indirect 

 or impHed ; e. g., " certain fibers are cdXXed pedimcular because 

 they pass into the crura cerebri." Very commonly a certain 

 fissure is named Rolando, but adjoining gyres, paracentral, 

 anterior central, etc. 



§37. Pecilonymy by Permutatioii. — When a name, or the 

 adjective part of a name, contains two or more elements of ap- 

 proximately equal value, they are subject to accidental or in- 

 tentional transpositions that may cause misapprehension. For 

 example in his paper on the brain of Ateles {Zool. Soc. Proc, 

 1 861) Huxley refers to the same fissure as occipito-temporal 

 on p. 258 and as temporo-occipital on p. 260. One might 

 infer that two different things were indicated just as, in chem- 

 istry, hydro- caj'bon and caj-bo-Jiydrate have different significations. 

 Similar diversity of usage exists with regard to the occipital 

 fissure, which is called by some occipito-parictal and by others 

 parieto-occipital. Orbito-frontal and fronto-oi'bital constitute an- 

 other instance. 



§38. Abbreviational Pecilonymy. — The following is a good 

 example of a bad system : in the translations of two of 

 Meynert's works occur corpus qiiadrigeminum ; corp. quadrigem- 

 inum ; corp. quadrigem.; corp. quadrig.; corp. quad. 



§39. TJic Perpetration or Toleration of Pecilonymy may be 

 ascribed to five mental conditions : 



A. Pure heedlessness. 



B. Indifference to the just claims of readers and especi- 

 ally of students. 



C. Pride in the hardly gained familiarity with the syn- 

 onymy of parts. 



D. Desire to avoid repetition, as in certain forms of lit- 

 erary expresssion ; see W. & G., '89, §73, B, note. 



E. Unwillingness to commit oneself to a particular^ name. 



1 In some cases all the current titles of a part are so unacceptable that one 

 recalls Shakespeare's epigram as to the " Small choice among rotten apples," 

 and the demand of the dissatisfied guest, "If this is tea, bring me coffee ; if it 

 is coffee, bring me tea." 



