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The oil of poppy, being a bland oil, does not possess any medicinal properties, and may be replaced by olive oil. Each calf to receive about 2 drachms a day for three days.

Six animals treated in this way showed immediate improvement and were finally cured. Penhale (Veterinarian, 1885, p. 106) reports immediate relief and ultimate cure in two calves by injecting the following mixture:

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Hutton (loc. cit., p. 62) reports favorable results in six out of eight cases by injecting the above liquid, in which 1 drachm of the tincture of opium was used in place of the chloroform.

This completes the list of remedies thus far suggested and tried, and the results obtained therefrom. The favorable testimony, though not abundant, is very encouraging. There are many substances, no doubt, the use of which might be more beneficial than those mentioned, but nothing can be said of them until they have been tried.

In this connection a few experiments may be described having for their object the infection of healthy calves with lung-worms and the determination of the effect upon them of intra-tracheal injections.

On October 30 two calves were fed with a large number of strongyli (over a hundred), obtained from the lungs of the calf described in the preceding pages as having been killed at the experimental station in order to determine the presence or absence of lung-worms. Live embryos were present in large numbers in the worms consumed. Worms, which were kept for a few days at a temperature of 700 to 80° F. in water, set free ova which hatched within one or two days. The embryos remained alive about five days, the water being occasionally changed. One of the calves thus fed was reported to cough now and then. This was killed December 17, over a month and a half after feeding. No worms or lesions referable to them were found after a careful search through the whole lung tissue. The other calf remained well.

Tracheal injections were tried upon several calves which had been affected with verminous bronchitis. The injections were made too late, however, and prove simply that injections may be practiced without any fear of untoward results. The worms had probably disappeared before the injections were made. The following is a brief résumé of these trials:

A bull calf received from New Jersey, October 21, 1885, was treated December 18, 1885. The liquid consisted of turpentine 2 drachms, chloroform half drachm, carbolic acid 20 drops, and was injected according to the directions given in the preceding pages. During the operation the animal coughed a few times, but was otherwise not inconvenienced. No after effects observed. Improvement slight. January 6 a second injection was made. The animal coughed frequently and struggled more violently, exhibiting a greater sensitiveness than at the first injection. For a few minutes after the operation symptoms referable to anæsthesia were observed. The animal was killed January 11. The trachea was carefully examined, but no inflammatory reaction noticed. The posterior lobes of the lungs contained hepatized masses evidently caused by lung-worms. There was no trace of the latter excepting a few degenerated ova in the mucus of the bronchi. We concluded from these facts that the worms themselves had disappeared before the last injection.

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VERMINOUS BRONCHITIS.

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