
Three substances of the so-called vitamin class called A, B and C have been differentiated with certainty, and it is possible that more exist. The indispensability of these substances is now generally accepted. “The discovery of vitamins was made by Hopkins only as recently as 1912.

When we think of how much still lies within the tomb, it means work for two years or more if they are to be properly conserved, recorded and evaluated.” The ante-chamber is the source of practically all the treasures removed this year. The steps and passages of the L-shaped approach were cleared, leading to Tutenkhamon's tomb. On November 5, 1922, Howard Carter came upon a step cut in the rock under the path leading to the tomb of Ramses VI. Some 60 tombs in the valley were already known. “Biban el-Muluk, the valley of the kings' tombs, is a wild, desolate region behind the western plain of Thebes. Other cryptographic approaches are still being studied.” 1923 A code can convey only meanings thought of in advance and provided for in a secret list such as a code book. A cipher always assigns substitute symbols to some given set of alphabet letters.

Cryptographic encipherment can be achieved in two different ways: by ciphers or by codes. However, a computer system can be adapted to guard its contents. It may soon be feasible to compile dossiers on an entire citizenry. Since many computers contain personal data and are accessible from distant terminals, they are viewed as an unexcelled means of assembling large amounts of information about an individual or a group. “There is growing concern that computers constitute a dangerous threat to privacy.
