Yellow orpiment (As2S3) and red orange realgar (As4S4), used by artists from different cultures since antiquity, and emerald green (Cu(C2H3O2 2·3Cu(asO2)2), a popular brilliant green pigment first synthesized by Willem Sattler in 1814, are pigments that contain arsenic.
Therefore, on the basis of the criteria set by the above-cited researchers, with which also other authors substantially agree [14, 16], the two identified clusters of samples should be characterized by different degrees of antiquity.
Since antiquity, different ways of interpreting dreams have been the main source of interest for laypeople and psychologists discussing dreaming (Artemidorus' Interpretation of Dreams and Freudian dream theory are two particularly prominent examples).
Since the major eastern Mediterranean quarries were worked at different times in antiquity, knowledge of the marble source can commonly give: (1) an approximate date of fabrication of an object, (2) information on trading patterns of the time, and (3) insight into changing esthetic tastes.
The Chinese texts were a collection of literary and philosophical books from different periods from antiquity to the present.
The disentangling of different layers of varying antiquity indicated the complex ways in which the religion of Zoroaster had developed.
His Problems and Solutions (Quaestiones), in three books, are collections of short essays, which were apparently grouped together in different books already in antiquity.
Later in antiquity, when different phases in the history of the Academy corresponding to changes in doctrine and philosophical approach were distinguished, some people spoke of a fourth Academy of Philo and a fifth of Antiochus (Sextus Empiricus [S.E.], Outlines, i.e., Pyrrhoneae hypotyposes [PH] 1.220).
Analysis of human complete mitochondrial DNA sequences has largely contributed to resolve phylogenies and antiquity of different lineages belonging to the majorhaplogroups L, N and M (East-Asian lineages).
Dr. Antonio Lazcano, Departamento de Biología, Universidad Nacional Autónoma de México, Ciudad de México, Distrito Federal, Mexico This is a good, rather interesting paper that approaches the issue of the relative antiquity of different component of modern cells in a very original fashion.
