VETERINARY MEDICINE. J 1('>5 



in the red blood corpuscles to the extent of 7 or 8 per cent. The exact cause 

 of this destruction of the blood corpu-sdes was not <lelerniined. 



A general review is given of the cattle tick as a disseniinator of Texas fever. 

 In exterminating cattle ticlis it is necessary fo cniisidcr the maxinmni and mini- 

 mum periods required for the tick to pass thmu^di its various sta,i,'es. Accordint; 

 to the author's exjieriments, ticks may live at least :\'2'I days without any host. 



An outbreak of rinderpest in the Philippine Islands, K. II. ^McIMui.len 

 (Avicr. Yet. Rer., 30 (J!)06), No. !), pi). 1063, 706'.'/).— A description is given of 

 an outbreak of rinderpest On the Island of Luzon which was traced to a ship- 

 ment of ITiO head of cattle from the Island of Mindoro. Infection spread quite 

 rapidly thronshout a territory containing 2().U0() cattle and cartTbao. and in 

 some localities the mortality was 00 per cent. The further spread of the dis- 

 ease was c<)mi)letely checked by the preventive inocidation of all exposed 

 animals. 



Influence of milk of different degrees of acidity on the health, of calves, 

 A. PiRoccHi (€Un. Yet. \Milan^, 30 (/.9«7). .\ o. .!. pp. '>!>-82, fig. /).— Careful 

 feeding experiments were carried out on 8 calves, during which milk of a vary- 

 ing degree of acidity was used. In these ex])eriments it was found that milk 

 with a slight acidity, as it comes from cows on a mixed or succulent ration, exer- 

 cises a more or less laxative effect upon calves. Feeding experiments with 

 milk just on the point of turning sour showed that such milk may be very 

 harmful to calves a week old or less, producing, in some instances, serious 

 gastro-intestinal disturbances. 



The action of the ether extract of antitetanus serum, 1'. ('ernovodeanu 

 and V. Henri (Compt. Rend. 8oc. Biol. [Pari.'i]. G2 {1901). No. 9, p. 392). — In 

 experiments in vitro it was found that the ether extract of antitetanus serum 

 possesses striking antihemolytic power in neutralizing the tetanus toxin. Thus, 

 when the ether extract of the serum was diluted a thousand times with a sodium 

 chlorid solution at the rate of 8 parts in 1,(M)(), this solution was capable of com- 

 pletely neutralizing the hemolytic action of 1 cc. of tetanus toxin. 



Measurement of anaerobiosis of tetanus bacillus, G. Rosenthal (Compt. 

 Rend. Soc. Biol. [Paris]. 62 {1901), Xo. 10, pp. .'/J.s'-/, //(^ ) , — In the author's expe- 

 rience if an aerobic culture of the tetanus bacillus be sown in deep tubes of 

 milk with a pipette, the tubes containing whole milk will show a rapid growth 

 whatever the height of the tubes, while in tubes containing skimmed milk, posi- 

 tive results are obtained after 48 hours to a depth of 9 to 10 cm. In tubes 

 filled with bouillon or peptonized glycerin, an abundant growth of the bacillus 

 was observed after several days to a depth of ATt to is cm. 



Thrush in horses, F. Lahille (Rol. Miii. A<ii: \liiiciio.s Ayrcs]; 6 (1906),No. 

 ■5, pp. 2.51-261. flt/s. 9). — 111 one locality alfalfa was excessively infested with 

 Apliis medicaginis, and since horses fed upon the alfalfa showed symptoms of 

 thrush about the eyes and on the other parts of the skin, it was suspected that the 

 aphis might be the cause of the trouble. An examination of the alfalfa showed 

 that in addition to A. incdicaginis a number of red s])iders were present, particu- 

 larly Tctrani/chus silrestrii. It is believed that this mite was the cause of the 

 trouble observed in horses. 



Hemorrhagic hepatitis in antitoxin horses, I'. A. Lewis (Jour. Med. 

 l\'(scarch, l.'j (1906), Ao. 3, pp. J/'iH-.'/dS, pi. 1). — The sudden occurrence of a large 

 number of deaths among horses used for the production of diphtheria antitoxin 

 led to the study of the cause of this trouble. It was found not to be due to any 

 alteration in the blood corpuscles, but to the amyloid degeneration of the liver 

 which develops in a certain [lercentage of cases as the result of fre(|uent bleedings 

 for the purpose of obtaining serum. Horses suffering with amyloid degeneration 



