56 
MANGOLD. 
A few days later some more specimens were forwarded, with a note 
that the millepedes (that is, the Geophilus) were by far the most 
numerous, and the following communication:—“ I gave the field a 
dressing of 1 cwt. per acre of sulphate of ammonia about a month 
since, and have resown it with Tares to-day ; it was cropped with Oats 
last year, and a good deal of long stubble was ploughed in, but no 
farmyard manure was applied.” 
Looking at the above observations, together with the notes 
previously given of the method of feeding of this kind of centipede, 
it does not seem open to doubt that they have a power of injuring 
crops, but at the same time they do not appear to exercise it often to 
a serious amount. 
The history of long yellow G. longicornis, as given by Mr. 
Newport,* is that the female lays from thirty to forty eggs “ in a little 
packet ” in a cell which she forms for them in the earth, and does not 
leave them until the eggs hatch, which is in about a fortnight or three 
weeks. It is stated that during this time she remains in the cell with 
the eggs, incubating them, and constantly turning and attending 
to them. 
From the above points it would appear that, where there is 
any great amount of centipedes, thorough stirring and turning the 
surface of the ground would be the best way to put an end to the 
attack, as they would thus be thrown out of their shelters in winter, 
and in the breeding season, when it is accepted as a fact that the 
female takes the enormous care mentioned above of the eggs, any 
operation which would scatter them abroad, where no shelter was given 
and no care taken, would save much increase. 
JULID^ ; POLYDESMUS. 
1, Julm LondilumU; 3, J. fiuttahis (pulcheUus, Leach); 4, J. terrestris; 5, horn ; 
7, Polydesinm complanatm ; all magnified ; and 2, J. yuttatus ; 6, P. compJanatm, 
nat. size. 
Snake Millepedes, or GnliclcB, have again been noted as destructive, 
and in cases (such as one of those reported) where they are working 
* Trans. Linn. Soc., vol. xix., p. 428. 
