However, assuming the presence of every substance that is not detected could result in overestimating the toxicity of a mixture.
According to REACH Annex XI 1.5 (grouping of substances and read-across approach), the aim of a read-across is to avoid testing of every substance for every endpoint using data known for one substance for other, similar substances.
As an anonymous referee pointed out, what I call McTaggart's second point is the conjunction of two principles accepted by McTaggart and subjected to individual discussion: the Identity of Indiscernibles, defended in section 99, and a principle of sufficient description, defended in section 104, according to which the qualities of every substance are fully determinate.
For each peak, the software generated a list of similarities by comparison with the peaks of every substance within the LECO-Fiehn Rtx5 library.
Whether it's from the street or from the pharmacies, at some point there is the giving of a name to every substance.
Since then, hives have been made out of practically every substance imaginable, including clay, stone, logs, bark, wicker, cork, and bamboo.
This contrasts sharply with a story Bill Bryson tells in A Short History of Nearly Everything, of the Swedish scientific pioneer, Karl Scheele, whose brilliant career was brought to an untimely end by his habit of tasting every substance he worked with, no matter how toxic.
Apart from the whole of extension, moreover, every substance contains an infinite number of substances, of (each of) which it is a mode.
Websites like Erowid allow drug users to post accounts of their experiences, which has resulted in a huge encyclopaedia of pretty much every substance ever snorted, inhaled, injected, or ingested, no matter how esoteric.
This sharing of drug-related knowledge isn't uncommon online; websites like Erowid allow drug users to post accounts of their experiences, which has resulted in a huge encyclopaedia of pretty much every substance ever snorted, inhaled, injected or ingested, no matter how esoteric.
Urged by such a velocity, with what force must its particles drive against (I will not say the eye, the tenderest of animal substances, but) every substance, animate or inanimate, which stands in its way!
