A number of authors, including Joseph Conrad, Sheridan Le Fanu, and Dick Donovan, tried their hand at the new genre, but their ingenuity only extended to secret passages, duplicate keys and diabolical mechanical devices.

When the key is withdrawn, all print or record of its action is obliterated, and no tell-tale left for duplicate keys to be made

And unless the list is regularly pruned to remove elements with duplicate keys multiple values associated with the same key will increase the size of the list, and thus the time to search, without providing any compensatory advantage.

Later, they temporarily removed the cylinders from the five locks, one at a time, so that a locksmith could make duplicate keys for them.

The modern version of this type of key is harder to duplicate as it is less common and requires a different machine from regular keys.

There is no direct legal sanction in the US for someone who copies a key that is stamped do not duplicate ( unless it is an owned key ), but there are patent restrictions on some key designs ( see " restricted keys ").

Btrieve handles duplicate keys using either a linked duplicate method, or by using a repeating duplicate method ( this terminology started being used when version 6. 0 was released ).

The linked duplicate method used a pair of record pointers in the index page itself to point to the head and tail of a doubly linked list of duplicate keys.

This meant that the order of the duplicate keys in the list was in the order they were entered.

The duplicate key method did not use a linked list, but rather made all the keys unique by creating a new index key and appending the address of the record pointer to the end of the key.

In clustered indices with duplicate keys, the dense index points to the first record with that key.

In clustered indices with duplicate keys, the sparse index points to the lowest search key in each block.

Having made duplicate keys from the impressions, Agar travelled down to Folkestone several times in the guard's van with Burgess, to test the keys and adjust them until they fitted the safe's locks.

Despite common belief, keys stamped with " Do not duplicate " or " It is unlawful to duplicate this key " are, with few exceptions, perfectly legal to duplicate.

The forty-four lists supplied by the AIA member companies were merged and duplicate names were eliminated.

The remaining names were then checked against the Thomas Register list ( see below ) and duplicate names were removed from the AIA lists.

Critics claimed the popular media were wrong to report monarch butterflies were threatened because this experiment did not duplicate natural conditions under which monarch caterpillars may come in contact with corn pollen.

Data redundancy is an issue with the file processing system because the independent data files produce duplicate data so when updates were needed each separate file would need to be updated.

In any case, other researchers were unable to duplicate Miller's claimed results, and in subsequent years the experimental accuracy of such measurements has been raised by many orders of magnitude, and no trace of any violations of Lorentz invariance has been seen.

When ordered by temperature and when duplicate classes were removed, the spectral types of stars followed, in order of decreasing temperature with colors ranging from blue to red, the sequence O, B, A, F, G, K and M. ( A popular mnemonic for memorizing this sequence of stellar classes is " Oh Be A Fine Girl / Guy, Kiss Me ".

A number of experienced observers claimed to see it as a double, while others were unable to confirm it ; indeed, the proponents themselves were sometimes unable to duplicate their results.

* The official missing count at the World Trade Center is 4, 986, reduced from the earlier count of 5, 219 after duplicate entries on the lists compiled by police and the city family center were removed.

* Multicast protocols were developed to reduce the server / network loads resulting from duplicate data streams that occur when many recipients receive unicast content streams independently.

Special nibble-copy programs such as Locksmith and Copy II Plus could sometimes duplicate these disks by using a reference library of known protection methods ; when protected programs were cracked they would be completely stripped of the copy protection system, and transferred onto a standard format disk that any normal Apple II copy program could read.

She attempted to duplicate 290 pictures which were drawn by her husband.

Tons of salted animals and their skins were shipped to Washington ; the quantity was so large that it took years to mount them all, and the Smithsonian shared many duplicate animals with other museums.

The map and counters are presented to the user who can then manipulate these, more-or-less as if he were playing the physical game, and send a saved file off to his opponent, who can review what has been done without having to duplicate everything on his physical set-up of the game, and respond.

Robert-Houdin's inventions were pirated by his trusted mechanic Le Grand, who was arrested for making and selling duplicate illusions.

For example, he correctly trusted the faithful Lu Xun and Zhuge Jin, so much so that he made a duplicate imperial seal and left it with Lu Xun ; whenever he would correspond with Shu's emperor Liu Shan or regent Zhuge Liang, he would deliver the letter to Lu Xun first ( as Lu's post was near the Shu border ), and then if, in Lu's opinion, changes were needed, he would revise the letter and then restamp it with Sun's imperial seal.

The following year, they published a retraction after researchers at other laboratories were unable to duplicate the results and the Berkeley lab itself was unable to duplicate them as well.

Looking to turn the corner, the Wolves hired former Detroit Pistons general manager Jack McCloskey to the same position, but even with notable first-round selections such as Christian Laettner and Isaiah Rider, the Timberwolves were unable to duplicate McCloskey's " Detroit Bad Boys " success in the Twin Cities, finishing 19 – 63 and 20 – 62 the next two seasons.

General Douglas MacArthur rarely signed a WWII condolence letter personally and all of his letters to families were signed by one of two assistants who tried hard to duplicate his signature but the " forgeries " were distinguished by an unusually high letter " l " and a skinny " D ".

The model of the starship USS Enterprise was destroyed in the previous film partly because visual effects supervisor Ken Ralston wanted to build a " more state-of-the-art ship for the next film ", but the filmmakers made the less costly decision to have the crew return to serve on the duplicate USS Enterprise A, and six weeks were spent repairing the old model.

In duplicate bridge, the cards held by each player in each deal are preserved so that each partnership plays the same set of hands as their East-West or North-South counterparts at other tables and with the scoring based upon relative performance, thus emphasizing skill over chance.

Polygraphs are mechanical devices that move a second pen parallel to one held by a writer, enabling the writer to make a duplicate of a document as it is written.

A public open day for the duplicate bridge was held on 16 May and the new bridge was opened to traffic on 22 May 2010, six months ahead of schedule.

It was intended to include 50 titles, many of which duplicate those on the Penguin Celebrations list but this was reduced to 49 titles as one of the 50, Hegemony or Survival by Noam Chomsky, had to be withdrawn after its initial release as Penguin discovered they no longer held the rights to it.

Whilst blindfolded Kuda Bux would read the dates on coins which are held on a spectator's hand, read the fine print of a magazine, thread a needle, duplicate words he had never seen written, shoot a bullseye with a pellet gun, and many other mysteries.

This parade is held the Sunday before Thanksgiving to not compete with the New York parade and usually does not duplicate any balloon characters.

Small Foot and Scooter were able to capture the Turbo duplicate and learn where their friends were being held.

Small Foot and Scooter were able to capture the Turbo duplicate and learn where their friends were being held.

However the Torch melted through the paste that held him to the floor, created a flaming duplicate to fool the two, then increased his flame enabling him to burn through the mirrors.

A solemn celebration of the funerals of the two Dukes, called a ' Month's Mind ', was held on 22 September 1551 with all the funeral equipment in duplicate.