THE NATURE OF BUDDING. 7 



Nerves and Muscles. As regards 

 nervous and muscular systems. In the 

 tentacles, branching nerve-cells are found at 

 the base of the ectoderm cells immediately in 

 connection with a layer of single unstriped 

 muscle filaments which lie between the 

 ectoderm and the fine membrane (inesogloea), 

 and, according to Parker and Haswell, are a 

 derivative of the ectoderm, and may be 

 regarded as a Rudimentary Mesoderm. 



Colony-budding. Reference has been 

 made to the peculiarity which specially 

 characterises these Hydroids of forming 

 groups or colonies, sometimes consisting of 

 millions of creatures all in organic connection. 

 These creatures, in common with many other 

 of the lower animals, have the faculty of 

 multiplying by means of budding, as it is 

 termed. Budding distinct from ova- 

 production. This method of reproduction 

 is entirely distinct from that which takes place 

 by means of ova, and may, perhaps, be tersely 

 described as being produced by a simple 

 inflation of the body wall (budding an 

 inflation of body wall) ; such inflation 

 when perfected by the formation of a mouth 



