. Monographs of North American rodentia [microform]. Rodentia; Paleontology; Rongeurs; Paléontologie. ir l! 1i. 1(52 MONfKlUAlMia OF NORTH AMEUICAN IJODENTIA. Taiilk XXXIX.—.l/m«MPfin«ii(» «/ iiinelmi 'itrcimrnn of A. RIP.\IIIi;H/rom I'hitailelphia i 'A a II ts P s 4:144 4M3 4141 4^43 4:140 4147 Loialily. Date. (•oUiptcdlij- IMi'pnri'd b\— i 1 1 5 5 1 s B 1 Xov. -, IMO ...do E Coiiea 4. V> ) 4.;io 4,110 4. ,-,0 4,;10 4. 4 a-) 4. .10 ;iO 1. . 1. )0 i.:io 1. i.:io 1. M
. Monographs of North American rodentia [microform]. Rodentia; Paleontology; Rongeurs; Paléontologie. ir l! 1i. 1(52 MONfKlUAlMia OF NORTH AMEUICAN IJODENTIA. Taiilk XXXIX.—.l/m«MPfin«ii(» «/ iiinelmi 'itrcimrnn of A. RIP.\IIIi;H/rom I'hitailelphia i 'A a II ts P s 4:144 4M3 4141 4^43 4:140 4147 Loialily. Date. (•oUiptcdlij- IMi'pnri'd b\— i 1 1 5 5 1 s B 1 Xov. -, IMO ...do E Coiiea 4. V> ) 4.;io 4,110 4. ,-,0 4,;10 4. 4 a-) 4. .10 ;iO 1. . 1. )0 i.:io 1. i.:io 1. M '* 1. 1.™ 0 ;io do ...do ...do ...do ...do .. ...do ,l„ .. do do do do do — . 0. :i5 ! 0. HO 1 do ilo ...do ...do ...do o.::o (I. :w 0. 35 11. :iii 0,35 o.:i4 11. 30 11. 35 11. *0 0, lO 0,FO 0, tO 0 C-) ( ...do lo ...ilo . do . do ...do ill) ilo ilo ...d,. ..do do ... ,|o do •:- ...do . do 0, fu ; ' ...do do .. do n.;A j .. do do ...do ( 1 llll 111. ill, ...do ...do .. do ...do ,,„ do 0,10 ' do ...do ' ... .111. 111. do .. do ...do —do do . ...do do ...do do do It appears from this tabic that the average length is , and, hi the best of our judgment, no allowance for shrinkage in the dimension is to be made. The extremes are from to , a variation of three-fourtiis of an inch, or about 17 per cent, of the mean. The average of the tail, without its hairs, being , we may simihirly set its true average length at an inch and a half; its variation amounts to '17, about the same percentage. The fore foot, averaging in its present state, ranges from to , that is, a variatiim of over 20 per cent.; but from the sniallncss of the measure- ment, the difficulty of placing the calipers upon exactly the same spot in the several specimens, and an actual difTercnce in the ])osition of the ball of the
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Keywords: ., bookcentury1800, bookdecade1870, bookpub, booksubjectpaleontology
