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"All that would be very beautiful and perhaps admirable," said he, more and more coldly, because he had entirely recovered himself, "if Natacha had not, herself, with her own hand, poisoned her father and her step-mother! always with arsenate of soda." "Oh, some of that had been left in the house," replied Rouletabille. "They had not given me all of it for the analysis after the first attempt.
The baits are renewed if they become too dry, or they can be kept moist by placing them under shingles or pieces of board. =Flea-beetles= attack the plants soon after they are set, and their injuries can be prevented by dipping the young plants before setting in a solution of arsenate of lead, about 1 pound to 50 gallons of water, or Paris green, 1 pound to 100 gallons.
Even so and for all that, man protects his tree by spraying it with poison, and thereby again does he have dominion. The spraying for apple-scab is with lime-sulfur to which may be added arsenate of lead. This treatment, properly timed, may suffice also for the codlin-moth.
As an antidote, the best when the poison is in solution is the hydrated sesquioxide of iron, formed by precipitating tinctura ferri perchloridi with excess of ammonia, or carbonate of soda. This is filtered off through muslin and given in tablespoonful doses. It forms ferric arsenate, which is sparingly soluble. Colloidal iron hydroxide may be used instead.
I simply inform you that someone tried to poison the general last night by pouring arsenate of soda into his sleeping-potion, which I bring you in this phial, arsenate which was secured most probably by washing it from grapes brought to General Trebassof by the marshal of the court, and which disappeared without anyone being able to say how." "Ah, ah, a family affair, a plot within the family.
Pere Alexis in the midst of all the strange laboratory instruments seemed Satan himself, and he repulsed the kindly arms stretched forth to sustain him; in the gloom, where danced here and there the little blue flames from the crucibles, lively as flickering tongues, he believed he saw Michael Nikolaievitch's ghost come to cry, "The arsenate of soda continues, and I am dead."
The roof of green is riddled. The rafters overhead reach out as naked as in December. Ruin looks through. On sweep the devouring hosts in spite of arsenate of lead and "wilt" disease and Calasoma beetles. Nothing will avail; nothing but a new woodlot planted with saplings that the caterpillars do not eat.
The thing is as certain as that we two are here arsenate of soda in the stains on the two napkins and traces of arsenate of soda in two of the four glasses; none in the carafe, none in the little bottle, none in the two glasses. I say it before you and before God." "So it is really true. Thank you, Alexis Hutch. Koupriane has not tried to deceive me. There has been nothing of that sort.
"The poison," replied Koupriane coldly, "the poison that he poured into the general's potion was that arsenate of soda which was on the grapes the Marshal of the Court brought here. Those grapes were left by the Marshal, who warned Michael Nikolaievitch and Boris Alexandrovitch to wash them. The grapes disappeared. If Michael is innocent, do you accuse Boris?"
The impurity was principally iron, a most unusual thing in my experience, and was due to two causes revealed by assay of the ore and analysis of the mine water, viz., an excess of arsenate of iron in the stone, and the presence in large proportions of mineral salts, principally chloride of Calcium CaCl., sodium NaCl, and magnesium MgCl2, in the mine water used in the battery.
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