One of the most important subjects in connexion with rubber plantations is the method to be adopted in tapping the trees for latex.
Fred reached for the newspaper, tapping a small article with his fingers as he handed it to Dean.
Their conversation was interrupted by a tapping at the back door.
In the case of a tree from seven to ten years old, tapping is so arranged that by the time the last incisions on the original growth are made, the new growths on other portions are at least four years old, and ready for new incisions to be made.
Rostov saw how the Emperor's rather round shoulders shuddered as if a cold shiver had run down them, how his left foot began convulsively tapping the horse's side with the spur, and how the well-trained horse looked round unconcerned and did not stir.
The ordinary forms of metallic filings coherer of the Branly type require tapping to bring them back to the high resistance or sensitive condition.
Again, the magician conscious of his limitations will seek to supplement his influence - his mana, as it is termed in the Pacific - by tapping, so to speak, whatever sources of similar power lie round about him; and these the "magomorphism" of primitive society perceives on every hand.
The noises made by some Ptinidae (Anobium) tapping on the walls of their burrows with their mandibles give rise to the "death tick" that has for long alarmed the superstitious.
In height, the slim legs, the large turned-in feet, the shrill piercing voice; but almost every one will remember, from Croker's Boswell, Colman's account of the great historian " tapping his snuff-box, smirking and smiling, and rounding his periods " from that mellifluous mouth.
The state owes to this ruler the opening up of new railways across the great desert, which was formerly passable only by camels, and the tapping of the valuable coal deposits that occur in the territory.
This has led to restrictive measures, the vines being tapped under definite regulations as to the manner and time of tapping, and also to requirements as to replanting vines to take the place of those which have been injured or destroyed, certain areas being periodically closed.
These vines are less satisfactory than trees as rubber producers, owing to the readiness with which they are injured and destroyed by careless tapping, and to the difficulty of regulating these methods in the case of vines distributed over enormous areas of forest.
If carefully conducted, tapping does not injure the tree.
It is possible to tap or prick trees daily for a number of years without apparent injury, but the practice of tapping on alternate days appears to be safer and to afford equally satisfactory if not better results.
America, and it is therefore probable that with greater experience as to the best methods of tapping and with older trees considerably larger yields may be expected from plantations in the future.
The tree is ready for tapping at about the same age as Hevea and the average yield of rubber is about the same.
Most of the native Sapiums have been destroyed by reckless tapping, and the merits of this genus have been somewhat overlooked and deserve reinvestigation.
The wetter off touches the top of the neck of the bottle with a moistened piece of iron and by tapping the blowing iron detaches the bottle and drops it into a wooden trough.
Great enlargements, by tapping new sources of supply, were made in 1891-93, while since 1902 works have been in progress for bringing a new supply of pure water from the region of the Salza, a distance of nearly 150 m.
The largest known species is the drummer of the West Indies (Blabera gigantea), so called from the tapping noise it makes on wood, sufficient, when joined in by several individuals, as usually happens, to break the slumbers of a household.
The Hevea product is obtained annually by tapping the trees and coagulating the sap over a smoky fire, but the caucho is procured by felling the tree and collecting the sap in a hollow in the ground where it is coagulated by stirring in a mixture of soap and the juice of a plant called vetilla.
The reappearance of the residual charge is promoted by tapping the glass.
For instance, in practical working it has been found that a furnace return of oï¿½ 504 lb per kilowatt hour is brought down to 0.406 lb per kilowatt hour when the material has been broken up, sorted and packed in air-tight drums. In the tapping process a fixed crucible is used, lined with carbon, the electrode is nearly as big as the crucible and a much higher current density is used.
We may easily realise its transmission through a solid by putting the ear against a table and scratching the wood at some distance, and through a liquid by keeping both ears under water in a bath and tapping the side of the bath.
A fortnight later the same manoeuvres, combined with constant "tapping" at the Confederate defences, caused him to fall back again.
The juice extracted by tapping the great aloe before flowering was fermented into an intoxicating drink about the strength of beer, octli, by the Spaniards called pulque.
Aaron Burr, whose only sister married Tapping Reeve (1744-1823), lived in Litchfield with Reeve in 1774-1775.
This may be relieved by tapping the cavity with a small hollow needle (Southey's trocar), or by passing into it a large sharp-pointed tube.
Its enormous railway facilities and its geographical situation as the junction of the great trunk lines running north and south, tapping also the Staffordshire potteries on the one side and the great mineral districts of Wales on the other, constitute Crewe station one of the most important links of railway and postal communication in the kingdom.
The Caspian remained; and it had for long been a common saying with foreign merchants that the best way of tapping the riches of the Orient was to secure possession of this vast inland lake.
That the sense of touch is highly developed seems quite certain, because the bird, although it may not be audibly sniffing, will always first touch an object with the point of its bill, whether in the act of feeding or of surveying the ground; and when shut up in a cage or confined in a room it may be heard, all through the night, tapping softly at the walls..
They have also adopted the policy of selecting favourable town-sites on the uninhabited prairie, erecting grain elevators at such points, and furnishing transportation facilities by means of branch roads tapping the main lines of travel.
- Tapping, herring-bone system.
Too frequent tapping leads to the production of latex poor in caoutchouc, whilst tapping of trees before they are six or seven years old, and from 20-25 in.
Africa have been destroyed by over-tapping and felling.
By shaking or tapping the tube the original high resistance is restored.
In 1894 he exhibited apparatus of this kind in which the tapping back of the tube of filings was effected automatically.
The later English artists have somewhat changed the mode of communicating motion to the slides, by attaching the screws pdrmanently to the micrometer head and tapping each micrometer screw into its slide.