776 EXPERIMENT STATION EECOED. 



" The mode of administration is important, and stiould be as follows : Intra- 

 venous In those diseases in which a specific action is desired ; full dose intra- 

 muscular injections, repeated once or twice at long intervals (eight weeks), in 

 those cases in which the tonic, stimulating, and alterative effect is desired, as 

 well as a certain specific action; small oft-repeated (week or ten days) doses, 

 intramuscularly, over a long period of time, in those chronic diseases in which 

 a purely tonic, stimulating, and alterative effect is desired." 



The control of fluid in cattle dipping tanks, C. Williams (Agr. Jour. Union 

 So. Africa, 8 (191Jf), No. 1, pp. 12-17). — In this paper the author presents a 

 short review of the work hitherto published on the subject and gives the results 

 of investigations that have been continued since publication of the article previ- 

 ously noted (E. S. R., 29, p. 585). It is stated that the conclusions drawn in 

 the previous article have been fully confirmed by the subsequent investigations. 



" During the winter season the amount of arsenite in the tank only fell from 

 0.144 per cent to 0.134 per cent in 2^ months, whereas during an equal period 

 of time in the summer the proportion of arsenite dropped from 0.138 per cent 

 to 0.109 per cent, thus showing that oxidation takes place to a greater extent 

 in the hot summer months than in the winter. . . . [In the winter] . . . 

 bacterial activity was only apparent during the first month (May 22 to June 

 22), for after the latter date no signs of oxidation were detected. It may be 

 also pointed out that very little dipping was taking place during the winter 

 months, which circumstance in itself would favor oxidation than otherwise." 



The investigations show that 10 gm. of sodium sulphite per 2,000 cc. of dip 

 fluid has very little effect in arresting oxidation, and that the same is true of 



I gm. of either carbolic acid or one of the more common coal tar disinfectants. 

 " By increasing the amounts of these two latter disinfectants to 10 gm. per 

 2,000 cc. of dip fluid the oxidation was very largely arrested. Under ordinary 

 conditions this proportion could be materially lessened, seeing that the oxidizing 

 action is much more powerful in vessels standing in the laboratory than in 

 dipping tanks, even when the latter are used only at comparatively long 

 intervals." 



Oxidation of arsenical dipping fluids, A. G. IIolboeow (Rhodesia Agr. Jour., 



II il91^f), No. 4, PP- 579-581). — Analyses made of the contents of three dipping 

 tanks that were in constant use show that the amount of oxidation of sodium 

 arsenite to sodium arsenate is neither constant nor regular but varies some- 

 what at different times. The author concludes " that there is no necessity to 

 renew a dip in which a fair number of cattle are constantly dipped at short 

 intervals until it has become too dirty for use." 



Arsenical cattle dips: Methods of preparation and directions for use, R. M. 

 Chapin {U. S. Dept. Agr., Farmers' Bui. 603 {1914), pp. 16, fig. i).— This publi- 

 cation, which is intended to be a handbook for the user of arsenical cattle dips, 

 includes general information, formulas, tables, and practical hints bearing on 

 the preparation and management of arsenical dipping solutions. 



Summary of experiments in the transmission of anthrax by biting flies, 

 M. B. MiTZMAiN (Pub. Health Serv. U. &., Hyg. Lab. Bui. 94 (1914), pp. 4i- 

 48). — The author states that the stable fly (Stomoxys calcitrans) as well as 

 Tabanus stria tus can be induced to feed on animals dying of anthrax and also 

 upon their bodies a short time after death. It has been observed in the Philip- 

 pines, howeverj that the stable fly does not, except under artificial conditions, 

 attack the carcass of an animal whether recently dead or opened and exposed 

 for some time. 



In experiments conductetl with a view to settling the question of fecal con- 

 tamination it was found that only the vegetative form of the anthrax bacillus 

 could be demonstrated throughout the entire series, either in the body of the 



