This is caused by the emission of sulphurous gases.

Nothing was left of the creature except a whiff of sulphurous gas.

Sulphurous gases emitted in the eruption would have compounded this effect.

In the vicinity of the rock, there was much discoloured water caused by sulphurous gas bubbles rising to the surface.

He stayed low, but sulphurous gases from the melted rock made his throat burn and his eyes water.

For example, the city financiers who built it claimed the choking sulphurous gases were good for health.

The saltworks burnt the cheapest coal they could get hold of, which gave off sulphurous gas and fumes.

These emit sulphurous gases, notably sulphur dioxide (SO 2 ).

Bubbles of foul-smelling sulphurous gas churned around the sides of the hull.

Simple heaps of ore were burnt on the mountain side and the sulphurous gasses allow to blow away to sea.

Climbers who suffer from asthma may be affected by the strong sulphurous gases emitted from the crater.

Cloud banks dark with the sulphurous gases of the belching earth, so thick that the rays of the sun never penetrated them.

On one occasion, for example, he established a sanitorium at Pozzuoli, claiming that the sulphurous gases would cure tuberculosis.

The eruption continued to emit intense sulphurous gasses which affected air quality throughout Iceland, depending on the weather conditions.

Now, this wall is seamed with fissures and clefts which already allow the sulphurous gases generated in the interior of the volcano to escape.

Toxic sulphurous gases made the air unbreathable in Villarrica and Pucón where at least 15 deaths were reported.

As the plants have a high tolerance to sulphurous gases, commercial production in Nicaragua is found on the slopes of the Mount Santiago volcano.

At the time of ancient Greece and Rome, incendiary weapons and wind-borne sulphurous gases were used to attack cities under siege.

The fan operating conditions can be very corrosive and far from easy to predict, involving salt-laden water vapour, sulphurous gases and traces of carbon.

There are no fences or wires; I can go right up to the lip of this volatile volcanic cone, where lava is bubbling beneath the sulphurous gases.

Sulphurous gas emanated in plumes, accompanied by a cracking noise from the bottom of the crater that sounded like a pebble being thrown into a dry well.

It was known as the "Pit" for the martyrs were kept hung, head downwards over a volcanic pit from which sulphurous gases and waters welled up.

Sulphur test The sulphur test reproduces the effects of sulphur and sulphurous gases found in the atmosphere and everyday substances.

Within the temple, enclosed behind some chicken wire, are two light-blue flames coming out of the ground — fissures in the earth where sulphurous gas escapes to the surface.

They puff on cigarettes, preferring the strong taste of Indonesian clove-infused 'kreteks' over the sulphurous gases, which have left some with streaming eyes and spluttering coughs.