In the first place you have the effect of light upon chlorophyl which is important; in the second place, the melted paraffin fills all interstices in which sap would collect and ferment.
All the life processes of the tree are carried on under the influence of the green chlorophyl grains, and these work only in the presence of light.
The melted paraffin being perfectly transparent, allows the light ray to set the chlorophyl into activity.
The second point of value consists in allowing the actinic ray in the sunlight to act upon the chlorophyl in bud and bark of the scion and it does not attract the destructive heat ray.
In the chlorophyl photograph, the distant hills are not overexposed, nor is the foreground underexposed; the yellow straw-stacks appear nearly white, and bright autumn leaves contrast strongly with the dark green about them.
I also made two landscape photographs, one by the ordinary process, and the other by the chlorophyl process, exposing them simultaneously.
Chlorophyl was the only thing I tried which was sufficiently sensitive to red to offer any encouragement in that direction; but the solution which I obtained was weak and unstable, and far from being a satisfactory color sensitizer.
The other, by the chlorophyl process, reproduces all colors in nearly the true proportion of their brightness, but with a slight exaggeration of contrast produced purposely by using a too-strong color solution in the small tank.
Attempts have been made to produce isochromatic gelatine dry plates which, while many times more sensitive to white light than my chlorophyl plates, shall also show the same relative color-sensitiveness.
Plates prepared with chlorophyl from fresh leaves do not require treatment with the tea organifier to secure this degree of sensitiveness.
My method consists in treating ordinary collodio-bromide emulsion plates with blue myrtle chlorophyl solution, exposing them through the yellow screen, and then developing them in the usual manner.
A glass plate is flowed with the emulsion, and as soon as it has set, the chlorophyl solution is applied for a few seconds, after which the plate is washed in pure water until smooth, when it is ready for exposure.
But as soon as chlorophyl is removed from the sphere of vegetable life, a brief exposure to the direct rays of the sun destroys its green color completely.
This peculiar behavior of quinine on exposure to sunlight finds its parallel in the behavior of chlorophyl with the direct rays of the sun.
It is well known that the origin of chlorophyl in the plant is entirely connected with light, so that etiolated leaves growing in the dark form no chlorophyl.
He thus considerably extended the list of chlorophyl containing animals, and his results are summarized in Sachs' Botany (Eng.
In this way Engelmann was able to determine the evolution of oxygen by Euglena and by chlorophyl granules.
It is now nearly forty years since the presence of chlorophyl in certain species of planarian worms was recognized by Schultze.
In some plants with variegated foliage we have the curious fact that the cells containing chlorophyl reflecting one color produce cells which reflect an entirely different color.
Albinism and white variegation in leaves appear to be due to the chlorophyl in such leaves being able to resist the action of the three (red, yellow, and blue) rays of light.
The chlorophyl is of minor importance, as it has little effect on the general results.
There then remains to be discovered which of the aforesaid substances plays the leading role in brewing, and also whether the presence of chlorophyl and inorganic salts in the hop extract influences or alters the results.
It should further be ascertained whether the chlorophyl percentage in the hop bells, new and old, is or is not the same in cultivated and in wild hops, and whether the aggregate percentages of organic and constituent observe the same limits.
There is every reason to suppose that the chlorophyl and inorganic constituents do not differ materially in the most widely different sorts of hops.
What corresponds in it to the sensibility of the animal is the impressionability, quite of its kind, of its chlorophyl light.
They can not assimilate inorganic matter because of the absence of chlorophylin their composition, but in organic matter they are omnivorous.
I emphasize the word "green," because it so happens that when a plant has no chlorophyl (as green color is named in the plant world) its feeding is of diverse kind to that which a green plant exhibits.
Chlorophyl is the green coloring matter of plants, and is, of course, a typical product of the vegetable world; yet it is made by such animals as the hydra of the brooks and ponds, and by many animalcules and some worms.
Leaf 7 had a paper label stuck to its upper surface a couple of hours while the plant was exposed to sunlight; 8 is the same leaf after the chlorophyl was taken out, and 9 represents it after treatment with iodine.
Then leaf 4 was taken from it; 5 represents this leaf after the chlorophyl was taken from it: it is white; 6 is the same after treatment with iodine.
At the extreme end of the filament (which is obtusely conical in shape) the chlorophyl grains retract from the old cellulose wall, leaving a very evident clear space.
The chlorophyl appears to assume a darker hue, and the granules become more densely crowded.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "chlorophyl" in a variety of sentences. We hope that you will now be able to make sentences using this word.
