BUKEAU OF ANIMAL INDUSTRY. 56'3 



The oil of poppy, being- a bland oil, does not possess any medicinal 

 properties, aud may be replaced by olive oil. Eacb 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 imme- 

 diate relief and ultimate cure in two calves by injecting the following 

 mixture : 



Oil of turpentine drachms.. 2 



Carbolic acid drops.. 20 



Chloroform drachm.. i 



Hutton {loc. cit., p. 02) 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, noVloubt, 

 tlie use of which might be more beneficial than those mentioned, but 

 nothing can be said of them until the^' 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 elicct upon them of intratracheal 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 em- 

 bryos were present in large numbers in the worms consumed. Worms, 

 which were kej^t for a few days at a temperature of 70° 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 iuje<itions 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 resume of 

 these trials : 



A bull calf received from New Jersey, October 21, 1885, was treated 

 December IS, 1SS5. The liquid consisted of turpentine 2 drachms, 

 chloroform half drachm, carbolic acid 20 drops, and was injected ac- 

 cording to the directions given in the preceding pages. During the 

 operation the animal coughed a few times, but was otherwise not incon- 

 venienced. Xo after effects observed. Improvement slight. January 

 (> 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 refera- 

 l)le to aniiesthesia were observed. The animal was killed January 11. 

 The trachea was carefully examined, but no inflammatory reaction no- 

 ticed. The posterior lobes of the lungs contained hepatized masses 

 evidently caused by lung-worms. There was no trace of the latter ex- 

 cepting a few degenerated ova in the mucus of the bronchi. "We con- 

 cluded from these facts that the* worms themselves had disappeared 

 before the last injection. 



