The impossibility of the correctness of the hypothesis is now revealed by the fact just demonstrated, that in the case of nitrogen the specific gravity does not coincide with the molecular weight.
Nitrogen resists compound combinations and if found in such combinations it breaks away as quickly as ever it can.
The water sucked up through them from the bog aids in the manufacture of the fluid so freely exuded by the bristly glands, but nitrogen must be obtained by other means, even at the sacrifice of insect victims.
When certain plants live in soil that is so poor in nitrogen compounds that protein formation is interfered with, they have come to depend more or less on a carnivorous diet.
The proportion of nitrogen is always less, about 50%.
It is found that a given specimen of charcoal cooled in liquid oxygen, nitrogen and hydrogen absorbs about equal volumes of those three gases (about 260 cc.
It appears that argon is relatively more opaque to the Rontgen radiation than either oxygen, nitrogen or sodium, and is on a level with potassium, chlorine, phosphorus, aluminium and sulphur.
In a similar way the weight of a litre of nitrogen vapour at the boiling point of oxygen was found to be 3.
His general conclusion was that the resistivity decreases much more quickly than the absolute temperature, so as to approach zero at a point not far below the temperature of nitrogen evaporating in vacuo.
One advantage of this method is that a great range of temperature is available when liquid air, oxygen, nitrogen or hydrogen is employed as the calorimetric substance.
It burns on ignition in air, and when strongly heated in an atmosphere of nitrogen it forms lithium nitride, Li3N.
Nickel (Ni) Nitrogen (N) About four fifths of the air is pure nitrogen.
You heat solid nitrate of ammonia, and that makes protoxide of nitrogen and water.
These compounds of nitrogen and oxygen,' he was saying, 'are very interesting.
Distillation in iron retorts yielded about half the nitrogen of this material in the form of ammonia, the carbon remaining in the retorts containing still from 6 per cent.
As a source of nitrogen I used the gases escaping from the carbonating towers of the ammonia-soda process.
These gentlemen state that by passing air and steam through a deep coal fire, the nitrogen so passed through is to a certain extent converted into ammonia.
Thus far we had quite failed to get the nitrogen of the air into action.
Tessier du Mothay, who proposed to bring a mixture of nitrogen and hydrogen into contact with titanium nitride and thus to form ammonia continuously.
Among the processes for obtaining ammonia from the nitrogen of the air which we investigated, was one apparently of great simplicity, patented by Messrs.
For this purpose we made for every experiment carried on by a mixture of nitrogen or air with steam another experiment with steam alone, carefully excludingnitrogen from the apparatus.
A process belonging to this class, proposed by Hugo Fleck, in which a mixture of carbonic oxide, steam, and nitrogen is made to pass over lime at a moderate red heat in order to obtain ammonia, was also carefully tried.
I have therefore for the present to rest satisfied with obtaining only half the nitrogen contained in the fuel in the form of ammonia.
It had long been known that atmospheric nitrogen appeared to have a very slightly greater density than nitrogen obtained from other sources.
When oxygen and nitrogen of air are absorbed by a mixture of 90 per cent calcium carbide and 10 per cent calcium chloride previously heated to redness in vacuo, a gas becoming richer and richer in argon is obtained.
The atmosphere, first subjected to analysis by Priestley and Scheele in the latter part of the eighteenth century, consists practically of oxygen and nitrogen in the almost constant proportion of 20.
It is a colourless pungent gas, composed of nitrogen and hydrogen; formula, NH3.
Animals contain in their tissues and fluids a larger proportion of nitrogen than plants, whilst plants are richer in carbonaceous compounds than the former.
Upon the oxygen present depends the power of the atmosphere to support combustion and respiration, the nitrogen acting as a diluent to prevent its too energetic action.
An acid saturated with red oxides of nitrogen is often known as "fuming nitric acid.
Nitrogen in the triad condition in the amines is far less poisonous than in the pentad condition.
Wiegmann to indicate that the nitrogen is directly connected with two alkyl groups--that is, ethyl and methyl.
The nitrogen of the air is not identical with the nitrogen obtained by analysis of a nitrogenous body.
In 1891 I visited the Scientific Institute in Lund in order to compare the spectrum analyses of these two sorts of nitrogen whose difference I had discovered.
These bacteria absorb nitrogen from the air in the soil and, in the ordinary process of growth, death and decay, make this nitrogen available to the host plants, leaving a residue in the soil for the roots of plants that are to follow.
It should be borne in mind that such animal manures are richer in nitrogen than in other elements and if used to excess may stimulate leaf growth at the expense of yield and quality.
It opens up the soil so that air containing atmospheric nitrogen can penetrate it and so that the bacteria requiring air for their best growth may have it available.
The application of nitrogenin one of its readily available forms (e.
Many soil areas do not contain the particular type of bacteria necessary to the fixation of atmospheric nitrogen by legumes.
Good results follow the use of nitrogen on grass sods and on leafy vegetables like spinach.
All of the other elements are derived from the soil except in the case of peas, beans, clovers and other legumes which secure most of their nitrogen from the air.
Thus this group of plants, known as legumes, have been used for generations as a method of increasing the nitrogen content of soils.
On the other hand, corn, peas, beans and other seed-forming crops need to have the nitrogen balanced with phosphorus.
In this manner he explains the great quantities of nitrogen evolved from volcanic vents and thermal waters, and the fact that air disengaged from the earth in volcanic regions is either wholly or in part deprived of its oxygen.
Even nitrogen is found, by chemists, to be contained very generally in the waters of mineral springs.
That the water is of atmospheric origin, derived from rain and melted snow, is proved, says Professor Bunsen, by the nitrogen which rises from them either pure or mixed with other gases.
The manure of sheep is less valuable than it would be, if so large a quantity of the nitrogen and mineral parts of the food were not employed in the formation of wool.
As the nitrogen in food is of absolute necessity to the growth of animals, so the nitrogen in the soil is indispensable to the growth of cultivated plants.
Do plants appropriate the nitrogen of the atmosphere?
These are slowly formed in the mortar by the changing of the nitrogen of the hair (in the mortar) into nitric acid, and the union of this with the small quantities of potash, or with the lime of the plaster.
It is only as they are decomposed, and have their nitrogen turned into ammonia, and their other ingredients resolved into the condition required by plants, that they are of much value as fertilizers.
We know this because we can artificially decompose, or separate, all water, and obtain as a result simply oxygen and hydrogen, or we can combine these two gases and thus form pure water; oxygen combines with nitrogen and forms nitric acid.
Urine, as will be recollected, containsnitrogen and forms ammonia on fermentation.
It furnishes both soda and nitrogen to plants, and is an excellent manure.
The changes which nitrogen undergoes, from plants to animals, or, by decomposition, to the form of ammonia in the atmosphere, are as varied as those of carbon and the constituents of water.
If the animal should fall into the sea he may become food for fishes, and our atom of nitrogen may form a part of a fish.
The use of the nitrogen in the air is to dilute the oxygen, and thus reduce the intensity of its effect.
When these compounds undergo combustion, or are in any manner decomposed, the nitrogen which they contain usually unites with hydrogen, and forms ammonia.
The urine, in like manner, contains a large proportion of the nitrogen and the soluble inorganic parts of the digested food.
But Danny was there; he had been talking at length with the Director General on the technical differences of the hot and cold nitrogen blasts for controlling fires on a wide front when suddenly the big man was brought in.
And Danny knew that that air, of which eighty percent was nitrogen, was being rid of its oxygen in the retort at his back, and the nitrogen alone was pouring out beneath him in a tremendous and ceaseless blast.
If one wishes a good growth of leaves, as in lettuce, nitrogenis needed.
The chief source of nitrogen is manure; of potash, nitrate or sulphate of potash, and wood ashes; of phosphorus, bone ash or phosphates.
Then there are the bad bacteria which act upon nitrogen in such a way as to form compounds which escape from the soil as a gas.
Whenever you see sickly looking foliage know that nitrogen is lacking, and supply manure in order to obtain it.
The food carbon, of course, is an exception to this rule and I will say again in certain cases nitrogen is, also.
This germ makes it possible that the nitrogen already in the soil be given to the plant in such a form that it may be absorbed, and absorbed in greater quantities than it otherwise could be.
You will remember that I told you some plants could take the very necessary chemical nitrogen from the air; most of them, however, must get it from the soil.
The manure I spoke of above is the great source of nitrogen upon which most plants depend.
Nitrogen is the plant food which is most easily lost out of the soil.
Some farmers in order to get more available nitrogen in the soil plant a crop of some legume.
There isnitrogen sufficient right in the air, but that again is not available.
More than another three tenths is organic matter; this contains scarcely a trace of ammonia or nitrogen in any form, being worth no more than common muck from a swamp.
For example, oxygen and nitrogen combine only under the influence of an electric spark, and carbon and calcium in the electric furnace.
They contain the same proportions of oxygen and nitrogen as nitrites, but are not nitrites.
NO2, which indicates that the carbon group is in some manner united by means of oxygen to the nitrogen group.
Another large class of explosives is formed by a more direct attachment of nitrogen to the carbon complex, as represented by M.
Most of the explosives in common use contain nitrogen in some form.
Nearly all the explosive compounds in actual use either for blasting purposes or as propellants are nitrogen compounds, and are obtained more or less directly from nitric acid.
Some of the peats lack lime, some of them lack lime, potash and phosphoric acid, and some these three and nitrogen also, so that you either have to apply some commercial form of nitrogen or grow legumes as green manures.
The plants receive this nitrogen, store it in themselves, and when the crop is plowed under you have a great amount of nitrogen added to the soil.
If you put lime in the orchards it will make the clover and most of the other green manure crops grow better, and thus you gain in nitrogen from the lime; you gain in potash as it comes from the wood ashes.
In the spring plow it under, and you plow under all the nitrogen that the plants had collected the previous year.
If they would do that I have not much doubt but what cultivation would be all right right along, if you will furnish that nitrogen that ought to be in the soil for the protection of the crop.
Nitrogen promotes quick and luxuriant growth of leaves and stems and is good to use when a green growth of any kind is wished.
Rye takes up the nitrogen that is in the soil, and when it dies leaves behind what it took out of the soil; the next crop can get this.
Nitrogen comes in the form of a salt, called nitrate of soda, and in dried blood.
As these grow they take up nitrogen from the air; the bacteria which make their home on the roots of those plants take the nitrogen from the air and give it to their host plants.
Mr. Alway: The more leaf mold the more nitrogen; if you have too much nitrogen it may develop the vine and fail to form fruit or seed.
Mr. Andrews: I think cultivation is the thing that ought to be done until the trees get well to bearing, anyway, and then it furnishes nitrogen to the soil to seed it down to clover.
In nitrogen our prairie soils are remarkably rich when first plowed up.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "nitrogen" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: ammonia; compost; dressing; dung; gas; manure; muck; nitrate; nitrogen; oxygen; silver
