Arrow Poison

Abor Arrow Poison

The material was scraped off an arrow head removed from a wounded man. It was a moist earthy-looking material. An oleaginous resinous body was extracted which was soluble in alcohol (90 per cent.) and dilute acetic acid, also in ether and in chloroform, but insoluble in water. It gave the " croton oil reaction" on the tongue and in the pharynx. A little rubbed on the skin of forearm raised a cr...

Poison ivy, poison oak, and poison sumac.

Poison Romance and Poison Mysteries

Searching for a Poison in a Poison

chlorinated biphenyl (PC8I mixtures had been described previously. High mortality, liver damage, and edema were associated with only two of the three PCB5. Using column and gas chromatography, several compounds were identified in the diethylether fracdon of these two PCBs. A chick embryo assay confirmed the high toxicity of this fraction. Mass spectremetric and microcoulometric analyses indicat...

Arrow categories

Goguen categories were introduced as a suitable categorical description of L-fuzzy relations, i.e., of relations taking values from an arbitrary complete Brouwerian lattice L instead of the unit interval [0, 1] of the real numbers. In this paper we want to study the algebraic structures derived from Goguen categories by replacing its second-order axiom by some weaker versions.