Along with such lame omissions we have the more vigorous procedure of substitutions. In certain cases there seems little if any kinship between the sounds or the articulatory actions by which they are produced. At the early stage more particularly almost any manageable sound seems to do duty as substitute. The early-acquired labials, including the labio-dental _f_ come in as serviceable ‘hacks’ at this stage. What we call lisping is indeed exemplified in this class of infantile substitutions. Children have been observed to say ‘fank’ for ‘thank’ and ‘mouf’ for ‘mouth,’ ‘feepy’ for ‘sleepy,’ ‘poofie’ for ‘pussy,’ ‘wiver’ for ‘river,’ ‘Bampe’ for ‘Lampe’ (German). The dentals, too, _d_ and _t_, are turned to all kinds of vicarious service. Thus we find ‘ribbon’ rendered by ‘dib,’ ‘gum’ by ‘dam,’ ‘Greete’ (German) by ‘Deete,’ ‘Gummi’ (German) by ‘Dummi,’ ‘cut’ by ‘tut,’ and ‘klopfen’ (German) by ‘topfen’. Similarly ‘gee-gee’ (horse), which oddly enough was first rendered by the child M. as ‘dee-gee,’ is altered to ‘dee-dee’. I find too that new sounds are apt to be put to this miscellaneous use. Thus one child after learning the aspirate (_h_) at two years not only brought it out with great emphasis in its proper place but began to use it as a substitute for other and unmanageable sounds. Thus he would say, ‘hie down on hofa’ for ‘lie down on sofa’. The aspirate is further used in place of _sh_, as when ‘shake’ was rendered by ‘hate,’ and of _st_, as when Preyer’s boy called ‘Stern’ ‘Hern’. In other cases we see that the little linguist is trying to get as near as possible to the sound, and such approximations are an interesting sign of progress. Thus in one case ‘chatterbox’ was rendered by ‘jabberwock,’ in another case ‘dress’ by ‘desh,’ in another (Preyer’s boy), ‘Tisch’ (German) by ‘Tiss’.[82] ----- Footnote 82: I find according to the notes sent me that the sounds _s_ and _sh_ develop unequally in the cases of different children. Some acquire _s_, others _sh_ before the other. ----- Besides omissions and substitution of sounds, occasional insertions are said to occur. According to one set of observations _r_ may be inserted after the broad _a_, as when ‘pocket’ was rendered by ‘barket’. A cockney is apt to do the same, as when he talks of having a ‘barth’ (bath). Yet this observation requires to be verified.