But there is no doubt that Kind deprived himself of a valuable appliance in not using the ball-clack, la soupape a boulet, that other well-borers employ, Fig.
When used in the former manner they are called borers or drills; in the latter case they are of the form Fig.
WHITE OAK BORER, Goes tigrinus (De Geer) A recent survey of damage caused by various wood borers to three species in the white oak group revealed an estimated annual loss in the South exceeding 20 million dollars.
One of the more important borers responsible for this damage is the white oak borer.
Generally, borers such as the red oak borer infest trees of poor vigor.
You can make one branch of a tree more attractive to the insects than the rest of the branches by partly girdling it or permitting borers or cankers to damage the base of the branch.
Cutting out the borers with a knife has also been resorted to; trunk washes have likewise been used but have not been very effective.
Scars on trunk of pecan tree caused by cutting out flatheaded apple tree borers from their tunnels.
Borers attack trees both old and young of many species, and a few of these species with wholesale deadly effect.
Borers attack upon the heels of the beetles, and the holes made by the beetles admit water and fungi into the wood.
Next year I shall get cork-borers made of the same steel as this knife is made of, and then hope to turn out graft-hybrids by the score.
The Borers had then left the trees, and their descendants had either not thought it worth while to lay any eggs on them, or the eggs had, from the lowered temperature caused by the shade, become addled.
But, as Bob pointed out, the passageways made by borers are never straight.
If you leave them over the summer, borers get into them, and they're about a total loss.
At this depth the borers came down to a stratum of coarse sand, mixed with clay balls at the top, and resting at the bottom on an ancient vegetable soil, and the image came up from the lower part of this coarse sand.
Dry Cooperage Stock and Wooden Truss Hoops These are especially liable to attack and serious injury by powder post borers (Fig.
Flat-headed Borers The work of the flat-headed borers (Fig.
Seasoned Products in the Rough Seasoned or dry timber in stacks or storage is liable to injury by powder post borers (Fig.
This class of borersis represented by a large number of species.
Work of Round-headed and Flat-headed Borersin Pine.
Those felled in late fall and winter will generally remain attractive to ambrosia beetles, and to the adults of round- and flat-headed borers during March, April, and May.
Powder Post Borers The character of the work of this class of insects is shown in Figs.
There are three kinds of borers which assail the apple tree.
The apple tree borers have destroyed thousands of trees in New England, and are likely to destroy thousands more.
The usual means of fighting the borers is, to seek after them in the burrows, and try to kill them by digging them out, or by reaching them with a wire.
On the surface of the fields around, numerous chippings of flint, and more or less perfect implements, such as celts, scrapers, and borers were found.
Of course it is hard work driving the borers down, for that we shall want two or three sledges of different weights.
Put one of the borers just at the place from which these cracks start--at least, I suppose they are cracks--and let us drive it in for an inch.
At first they often either missed the heads of the borers or struck them unevenly.
Apple tree borers are frequently serious, especially in young orchards, where the trees should be regularly "grubbed" and the borers dug out or killed with a piece of wire.
Look over the trees for borers every spring, or better, every spring and fall.
Examine the bushes in late fall, and those in which the borers are at work will usually have a wilted appearance and be of a brownish color.
These borers should be dug out and whitewash applied, which latter also protects against this trouble.
Furthermore, borers may be the cause, which can be determined by examining the points where the gum exudes, seeing if any wood grains are present.
The application of coal tar to prevent the root borers of the prune which operate near the surface of the ground was found to be not injurious to the trees, although there was great apprehension that there would be.
Both borers are constructed in nearly the same manner; they are screwed upon the ends of small mandrels, mounted in frames similar to a lathe.
The frames for both borers are brought up towards the block by means of levers M and N.
This machine has an iron frame, A A, with three legs, beneath which the block is introduced, and the screw near B being forced down upon it, confines it precisely in the proper spot to receive the borers D and E.
But my thirty years' residence in a chestnut grove leads me to think that this nut tree is exceedingly free from wood borers of any kind.
These bark borers usually appear here in the Northern States the last of June or early in July, and both sexes attack hickory trees of all species, but appear to prefer the old and nearly mature trees to the young and small with thinner bark.
When a number of these borers are at work on the same tree they sometimes girdle and kill it the first season, especially if it is young or a small specimen.
There are also two or threeborers of the Buprestis family of beetles which occasionally attack beech trees.
Painting the stems with soap, cement, clay, or even common mineral paints, will answer very well if a little care is given to keeping down the number of insects by removing the larger part of the borers with knife or gouge.
But if the tree is not killed outright it will show, by the check to its growth, thatborers are at work.
The only real remedy, however, is to dig the borers out.
It no doubt will destroy borers if they are just getting a start, but it will not keep away the insects that lay the eggs, and will not destroy the borers that have found their way beneath the bark.
If the borers are dug out twice a year, they will not get sufficient start to make the operation very laborious.
Victoria is a valuable market sort where borers are numerous, as it is little injured by them.
The only certain remedy for borers is to dig them out, or to punch them out with a wire.
The bottom of the pole has an iron ring, and a hole in which four-cornered borers of hardened iron can be fitted.
The whole barrel is then worked with borers of gradually increasing size, and in three days the boring is finished.
Many of the borers are beetles, and there are other varieties which do great damage, though other kinds are useful to man in destroying harmful insects.
We are all familiar with what we call "worm-eaten" wood, with canals that have been eaten by these borers running through it in all directions.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "borers" in a variety of sentences. We hope that you will now be able to make sentences using this word.
