| Comparison with 1859 | 
  | 
| 
like a pedigree; 
but the degrees 
of modification which the different groups have undergone, 
have 
to be expressed by ranking them under different so-called genera, sub-families, families, sections, orders, and classes.  | 
 | 
 It may be worth while to illustrate this view of classification, by taking the case of languages.  If we possessed a perfect pedigree of mankind, a genealogical arrangement of the races of man would afford the best classification of the various languages now spoken throughout the world; and if all extinct languages, and all intermediate and slowly changing dialects, had 
to be included, such an arrangement 
 would, | would, 1859 1860 |  | would 1861 1866 1869 1872 |  
  
 I think, | I think, 1859 1860 |  I think, 1861 1866 1869 1872 |  
  
be the only possible one.  Yet it might be that some very ancient language had altered 
little, 
and had given rise to few new languages, whilst others (owing 
to the spreading 
and subsequent 
isolation 
and states 
of civilisation of the several races, 
descended 
 from a common race) had altered much, | from a common race) had altered much, 1859 1860 1861 |  
| from a common stock) had altered much, 1866 |  
| races, 1869 1872 |  
  
and had given 
rise to many new languages 
and dialects.  The various degrees of difference in 
the languages from 
the same stock, would have to be expressed by groups subordinate to groups; but the proper or even only 
possible arrangement would still be genealogical; and this would be strictly natural, as it would connect together all languages, extinct and modern, 
by the closest affinities, and would give the filiation and origin of each tongue.  | 
 | 
 In confirmation of this view, let us glance at the classification of varieties, which are believed 
or known 
to have 
descended from one 
species.  These are grouped under species, with 
sub-varieties under varieties; and with our domestic productions,  
several other grades of difference 
are  requisite,  as  
we  
have  
seen  
with  
pigeons.   
The origin of the existence of groups subordinate to 
 groups, | groups, 1859 1860 |  | groups 1861 1866 |  
  
is the same with varieties as with species, 
 | 
 
  
  
like a 
 pedigree; | pedigree; 1859 1860 1861 1866 1869 |  | pedigree: 1872 |  
  
but the 
 degrees | degrees 1859 1860 1861 1866 |  | amount 1869 1872 |  
  
of modification which the different groups have 
 undergone, | undergone, 1859 1860 1861 1866 |  | undergone 1869 1872 |  
  
 have | have 1859 1860 1861 1866 |  | has 1869 1872 |  
  
to be expressed by ranking them under different so-called genera, sub-families, families, sections, orders, and classes.  | 
 | 
 It may be worth while to illustrate this view of classification, by taking the case of languages.  If we possessed a perfect pedigree of mankind, a genealogical arrangement of the races of man would afford the best classification of the various languages now spoken throughout the world; and if all extinct languages, and all intermediate and slowly changing dialects, 
 had | had 1859 1860 1861 1866 1869 |  | were 1872 |  
  
to be included, such an arrangement 
 would | would 1861 1866 1869 1872 |  | would, 1859 1860 |  
  
 ..| ..... 1861 1866 1869 1872 |  | I think, 1859 1860 |  
  
be the only possible one.  Yet it might be that some 
 very ancient language had altered | very ancient language had altered 1859 1860 1861 1866 |  
| ancient languages had altered very 1869 1872 |  
  
 little, | little, 1859 1860 1861 1866 |  | little 1869 1872 |  
  
and had given rise to few new languages, whilst others 
 (owing | (owing 1859 1860 1861 1866 |  
| had altered much owing 1869 1872 |  
  
to the 
 spreading | spreading 1859 1860 1861 1866 |  | spreading, 1869 1872 |  
  
 and subsequent | and subsequent 1859 1860 1861 1866 |  and subsequent 1869 1872 |  
  
 isolation | isolation 1859 1860 1861 1866 1869 |  | isolation, 1872 |  
  
and 
 states | states 1859 1860 1861 1866 |  | state 1869 1872 |  
  
of civilisation of the several 
 races, | races, 1859 1860 1861 1866 |  races, 1869 1872 |  
  
 descended | descended 1859 1860 1861 1866 |  | co-descended 1869 1872 |  
  
 from a common stock) had altered much, | from a common stock) had altered much, 1866 |  
| from a common race) had altered much, 1859 1860 1861 |  
| races, 1869 1872 |  
  
and had 
 given | given 1859 1860 1861 1866 |  | thus given 1869 1872 |  
  
rise to many new 
 languages | languages 1859 1860 1861 1866 |  | dialects 1869 1872 |  
  
and 
 dialects. | dialects. 1859 1860 1861 1866 |  | languages. 1869 1872 |  
   The various degrees of difference 
 in | in 1859 1860 1861 1866 |  | between 1869 1872 |  
  
the languages 
 from | from 1859 1860 1861 1866 |  | of 1869 1872 |  
  
the same stock, would have to be expressed by groups subordinate to groups; but the proper or even 
 only | only 1859 1860 1861 1866 1869 |  | the only 1872 |  
  
possible arrangement would still be genealogical; and this would be strictly natural, as it would connect together all languages, extinct and 
 modern, | modern, 1859 1860 1861 1866 |  | recent, 1869 1872 |  
  
by the closest affinities, and would give the filiation and origin of each tongue.  | 
 | 
 In confirmation of this view, let us glance at the classification of varieties, which are 
 believed | believed 1859 1860 1861 1866 1869 |  | known 1872 |  
  
or 
 known | known 1859 1860 1861 1866 1869 |  | believed 1872 |  
  
to 
 have | have 1859 1860 1861 1866 |  | be 1869 1872 |  
  
descended from 
 one | one 1859 1860 1861 1866 |  | a single 1869 1872 |  
  
species.  These are grouped under 
 species, with | species, with 1859 1860 1861 1866 |  
| the species, with the 1869 1872 |  
  
sub-varieties under 
 varieties; and with our domestic productions, | varieties; and with our domestic productions, 1859 1860 1861 1866 |  
| the varieties; and in some cases, as with domestic pigeons, 1869 |  
| the varieties; and in some cases, as with the domestic pigeon, with 1872 |  
  
several other grades of 
 difference | difference 1859 1860 1861 1866 1869 |  | difference. 1872 |  
  
 are | are 1859 1860 1861 1866 1869 |  are 1872 |  
  
 requisite, | requisite, 1859 1860 1861 1866 |  | requisite. 1869 |  requisite, 1872 |  
  
 as | as 1859 1860 1861 1866 |  as 1872 |  as 1869 |  
  
 we | we 1859 1860 1861 1866 |  we 1872 |  we 1869 |  
  
 have | have 1859 1860 1861 1866 |  have 1872 |  have 1869 |  
  
 seen | seen 1859 1860 1861 1866 |  seen 1872 |  seen 1869 |  
  
 with | with 1859 1860 1861 1866 |  with 1872 |  with 1869 |  
  
 pigeons. | pigeons. 1859 1860 1861 1866 |  pigeons. 1872 |  pigeons. 1869 |  
   The origin of the existence of groups subordinate to 
 groups | groups 1861 1866 |  | groups, 1859 1860 |  
  
is the same with varieties as with species, 
 |