HENDEKSON'S HANDBOOK OF PLANTS. 



373 



INS 



plantation. We find an excellent remedy 

 for this pest to be White Hellebore powder, 

 which must, however, be put on in the 

 early stage of the plant's existence, as 

 when heading up of course it would not 

 be safe to apply it. The past fall and 

 winter our cold frame Cabbage and Cau- 

 liflower plants were attacked by the Cab- 

 bage Worm, both in the seed bed in the 

 open field, and also after being trans- 

 planted into the frames. One good dust- 

 ing of White Hellebore powder destroyed 

 them completely on both occasions. 

 There are three kinds of insects which 

 attack the roots of Cabbages after being 

 planted out in the field to head. One is 

 a species of Wire Worm, that imbeds it- 

 self in the stem; another, a white mag- 

 got-like grub, that eats the bark of the 

 root a few inches below the surface of 

 the ground; another still, of a dull gray 

 color, resembling a caterpillar somewhat 

 in shape, that cuts the root clean off. We 

 regret to say that for none of these dan- 

 gerous insects can we suggest anything 

 that will kill them without at the same 

 time killing the plant. The only conso- 

 lation we can give cultivators is, that by 

 some kind provision of nature it is rare 

 that they follow up their attacks in suc- 

 cessive years; and in many sections they 

 disappear for many years. In long cul- 

 tivated grounds, that are continually be- 

 ing turned up by the plow and culti- 

 vator, they now do but little harm, as the 

 continued stirring of the ground no doubt 

 disturbs them so as to prevent their in- 



The Phylloxera, which has been so de- 

 structive to the Grape vine in Europe, is, 

 fortunately, mostly localized with us 

 thus far, and its ravages have been 

 far from alarming, though many feel ap- 



mi 



prehensive of the future. Its depreda- 

 tions, which are of a deadly nature, are 

 confined chiefly to the roots, and thus 

 far no certain means for its destruction 

 have been discovered. The Phylloxera 

 nas, in a few places, been found quite de- 

 structive to the foreign vine grown under 

 glass, especially in parts of Rhode Island, 

 making it necessary, in some cases, to re- 

 new both the vines and the borders. 



Colorado Bug, or Potato Beetle, so de- 

 structive some years ago, has now been 

 well-nigh driven off by the persistent use 

 of Paris Green by farmers and gardeners. 



Insertion. The manner in which one part 

 is inserted into, or adheres to, or origi- 

 nates from another; as the leaf on the 

 branch, the branch on the stem, etc. 



Integument. A portion closely investing or 

 merely surrounding another. 



Internode. The space between two nodes. 



Interstices. Spaces between one thing and 

 another. 



Inverted. Having the apex in an opposite 

 direction to that of some other thing, as 

 many seeds. 



Involucre, Involucrum. A ring or rings of 

 bracts surrounding several flowers, such 

 as the whorled bracts at the base of an 

 umbel, a head, or a single flower. 



Involute, Involutive. Rolled inward; when 

 edges are rolled inward on each side. 



Iridaceoe, (Ensatce, Inds.) A natural order 

 of Monocotyledons belonging to Lind- 

 ley's Narcissal Alliance of Endogens. 

 They are herbs with corms, rhizomes, or 

 fibrous roots, and mostly with equitant 

 leaves, and flowers in sheaths. They are 

 found in warm and temperate regions, 

 and abound at the Cape of Good Hope. 

 There are about fifty genera and upward 

 of five hundred species.. Iris, Oladwlus, 

 Crocus, and Ixia are examples. 



