586 EXPEEIMENT STATION EECORD. 



habitations, coming out from its hiding place when the lights are extinguished 

 find attacking the inmates, biting its human victims chiefly on the face. Nu- 

 merous flagellates were found in its hind gut, and 20 or 30 days after having 

 bitten a small monkey {Callithrix penicillata) numerous trypanosomes were 

 found in the monkey's blood. 



The author has succeeded in transmitting the parasite to guinea pigs, rab- 

 bits, dogs, and other monkeys, for all of which animals it is pathogenic, the 

 least so in adult dogs. Callithrix and the guinea pig were found to be the 

 most susceptible. In searching to discover the usual host in the region from 

 which the infected bugs had come, the parasite was found in the inmates of the 

 houses and also in a cat. The clinical history is given of two cases, children of 

 2 and S years, in which the parasite was found. The symptoms correspond in 

 many respects with those of African sleeping sickness, although somnolence 

 seems to be lacking. 



Bovine tuberculosis, R. Bidart (La Tuberculosis Bovina. Buenos Aires: 

 Govt, 1909, pp. XV+166, pis. 32; English ed., pp. 200, pis. 32; rev. in Rev. Gen. 

 Med. Vet., 15 {1910), No. 178, pp. 583, 58^).— This is a report presented to the 

 secretary of agriculture by the inspector general of veterinary police of the 

 cattle board. 



Tuberculosis in Argentina has gradually developed in proportion to the 

 density of animal population. The danger of its presence may be considered of 

 little or no importance in the breeding districts for the reason that the popu- 

 lation of bovines is rarely above from 10 to 20 head per square kilometer (from 

 1 to 2 per 25 acres). 



The action of tuberculosis on the heart, F. M. Pottenger (Arch. Int. Med., 

 Jf (1909), pp. 306-322; ahs. in Zfschr. Tubcrkulose, 16 (1910), No. 1, p. 79).— 

 In advanced stages of tuberculosis the blood pressure is low. The facts con- 

 tributing to this are action of the toxins on vasodilation, weakness of the heart 

 muscle, and general emaciation. Conditions which compensate for this are 

 hypertrophy of the heart muscle and thickening of the arterial walls. The thick- 

 ening is possibly the result of the action of the toxins and is chiefly present in 

 the older cases. 



Myocarditis is common in advanced tuberculosis, and often responds to 

 proper treatment. The heart sounds in advanced tuberculosis are hard to inter- 

 pret, because pathological processes occur in and around the valves, such as 

 infiltration, cavities, emphysema, and shrinking. In many cases the heart lies 

 in an nbuormal position and must do its work under unfavorable conditions. 

 In estimating the size of the heart we must take into consideration that a dis- 

 jilacement to the right and backward usually exists, with the result that the 

 findings obtained at the usual intercostal space give no correct indication as to 

 the size of the heart. 



About placental tuberculosis, Schlimpert (Arch. Gyniikoh, 90 (1910), No. /. 

 pp. 121-132; ahs. in Ztschr. Tubcrkulose, 16 (1910), No. 1, p. 80).— The results 

 of a microscopical examination of 11 placentae from tubercular mothers are 

 given. In 9 out of 10 cases positive histological findings were obtained, and in 

 one case the tubercle bacilli were isolated in a smear. 



Tuberculosis (Michigan Sta. Circ. 8, pp. 59-63). — A brief account of tubercu- 

 losis in which the importance of its early detection and eradication from Michi- 

 gan herds is emphasized. 



The value of tuberculin as a diagnostic medium, E. Bierotte (Umschau, 

 IJ/ (1910), No. 2-'i, pp. .'i63. ■'i6-'i). — An article in which the various causes of error 

 in diagnosing tuberculosis with tuberculin are considered. 



Tuberculin hypersensitiveness, K. .Toseph (Ztschr. Iniinunifdtsf. u. Hxpt. 

 Thcr., I, Grig., Jf (1910), No. o, pp. 57 J-J8J).— Tests were made with guinea 



