588 EXPERIMENT STATION RECORD. 



according to the author, mainly as a result of the campaign against tubercu- 

 losis. 



Data relating to the tuberculin tests conducted in Sweden since 1S97, with 

 annual summaries, are presented in the appendix. The total number of animals 

 tested from 1897 to 1908, inclusive, was 716,310, of which 12,728 herds with 

 306,372 animals were tested for the first time; of the latter number 29.8 per 

 cent reacted, while 5,527 of the herds were found entirely free from tuberculosis. 



Vaccinating- ag^ainst hemoglobinuria in bovines, Schultze (Berlin. Tier- 

 drztl. Wchnschr., 26 (1910). Xo. i,3, p. 829).— A reply to Schmitt (B. S. R., 23, 

 p. 788). 



The cause of "apoplexy" in winter-fed lambs, H. H. Wing (New York 

 Cornell Sta. Bui. 285, pp. 37-46, figs. 3). — For several years a disease resembling 

 apoplexy in man has affected lambs being fed in the vicinity of Batavia, N. Y.. 

 for the spring market. " In some cases the losses have amounted to a large 

 percentage of the flock. The trouble appears suddenly and does its work 

 quickly. It is sometimes accompanied by paralysis. It nearly always proves 

 fatal, only about 1 or 2 per cent of those afflicted ever having been known to 

 recover. The disease seems to occur only where lambs are being fed heavily 

 and it then attacks the strongest and most vigorous. Lambs will be feeding 

 nicely and all will seem perfectly well at 12 o'clock m., and when the feeder 

 returns at 4 or 5 p. m., 1 or 2 of the best lambs will be found dead, appearing 

 to have died without a struggle." 



Two opinions have been set forward as to its cause — first, that the disease is 

 brought about by feeding an excess of protein in the ration and second, that 

 the disease is caused by overfeeding. An experiment to determine its cause 

 was combined with a feeding experiment as noted on page 578. The results as 

 relating to the cause of the disease and. the conclusions dravpn are as follows : 



" From the observations during this experiment, it would seem that apoplexy 

 is caused mainly by sudden overfeeding rather than from feeding a narrow 

 ration. Three lambs were lost from pen No. 3, which were fed a ration with 

 a nutritive ratio of 1 : 8, while one lamb was lost from pen No. 2 with a ration 

 having a nutritive ratio of 1 : 4.6, and no lambs were lost in pen No. 1 in 

 which the nutritive ratio of the ration was 1 : 5. Furthermore, no lambs were 

 lost from any pen when it was full except that in pen No. 3, fed a ration having 

 a nutritive ratio of 1:8, one lamb was lost when some of the lambs were off 

 feed, thus allowing others to overfeetl. In the opinion of the persons who con- 

 ducted this experiment, there should not be the wholesale loss from overfeeding 

 that some feeders have experienced if proper precautions are taken to keep 

 the rack spaces all occupied and to distribute the grain equally. There may 

 be an occasional sheep that can not stand the heavy feeding necessary for 

 fattening, and there may also be an occasional loss from nervous excitement, 

 which is thought to be one cause of apoplexy." 



Linguatulosis fatal to tlie g-oat, Moussu (Rec. MM. V6t., 87 (1910), No. 5, 

 pp. 153-158; al)s. in Vet. Rcc., 23 (1910), No. 1169, pp. 356, 357).— The case re- 

 ported was parasitized by Linguatnla tccnioides and stomach worms. 



Sarcocysts in the camel in Egypt, F. E. Mason (Join: Compar. Path, cmd 

 Ther., 23 (1910), No. 2, pp. 168-176, fi.gs. 7). — The author shows that the sar- 

 cocyst of the camel differs in many ways from the sarcocysts of the ox, buffalo, 

 sheep, and pig. He considers it to represent a new species, and supplies the 

 name Sarcocystis cameli. 



"Attempts at discovery of the source of infection have failed; examinations 

 of ticks, biting flies, and lice in the case of the buffalo, have not given any 

 satisfactory result. No calcified cysts have been found, nor any evidence of 



