{Retemdera Schauta, Sch.n.) 
This most destructive disease oi' suir.ir-beet is caused by a 
minute nematode, better known by the name of eehvorm, on 
account of its shape and wriggling movement when seen under 
the microscope. It is only the larval or young condition before 
sexual differentiation and the males that are eel-shaped ; the 
females are lemon-shaped, sluggish, and generally located in the 
Fig. 5.— Beet aicknet 
j^ ^ L ^ cgg } ail mgmy magmned. 
sL al if 1 ! t TVT tl f S 'S iere they form whiti8h w arts about the 
size of a pins head. The encysted ..„„ tw0 t(1 
^te^^St T- hatCh6d bef ° re le -ing thT body- 
in omer vroras, the nematode is viviparous. 
sonmtoe t^T', 001 ^ " the<)el ™rms, after wandering for 
r^nentt; S'Ca mt ° th8 " 83UeS ° f " le '"""• Aich 
colour, and soon the whole decays cluu »«e8 to a blackish 
thews' Tc^many tuSftufoTf attacks mangold, 
cabbage, &c; also some liSS^SuS^l" W" ^f' 
ot various kinds. suminous plants, and probably weedB 
