n6 eroiUTioy AXD NATURAL THEOLOGY. 



On the other hand, Murray considers that 

 cases may generally be explained by the fc 

 existence of land-connection between he 

 countries in which these allied forms o 

 nor must the influence of the Glacial Perio be 

 overlooked. 



Some cases, as for example, the ex! 

 of lemurs on distant islands, may po 

 explained, as suggested by Darwin,* by eir 

 being the remnants of a once widely distri: 

 group, which has suffered much extinction, ml 

 is now almost confined to Madagas< 

 Africa, and the Indo-Malayan region, conijn 

 on islands being always less severe tha on 

 continents. But so many forms are comm to 

 Madagascar and the Indo-Malayan region 

 we can scarcely avoid concluding that a < 

 communication really existed between era 

 at some former period. Little as we low 

 at present of the productions of East A 

 many forms once supposed to be peculi to 

 Madagascar, have lately been met wit! on 

 parts of the coast, between Xatal and Zan 

 and others doubtless remain to be disco 



w TOL L p. 202. 





