A typical resin is a transparent or translucent mass, with a vitreous fracture and a faintly yellow or brown colour, inodorous or having only a slight turpentine odour and taste.
It is also advisable to wash all woodwork and gangways annually with a weak solution of formalin, or other inodorous germicide.
Diazomethane is a yellow inodorous gas, very poisonous and corrosive.
The waters are tasteless and inodorous, and contain calcium and magnesium bicarbonates, combinations of hydrogen and silicon, and of iodides, bromides and lithium.
A few do not exist ready formed in the plants, but result from chemical change of inodorous substances; as for instance, bitter almonds and essential oil of mustard.