170 THE INDIAN JOURNAL OF VETERINARY SCIENCE AND ANIMAL HUSBANDRY [ I, II
Based on Anderson's formulae, the requirements for milk of various fat percentages would be
per gallon:—
|
Composition of milk |
Food requirements |
||||
|
Fat per cent. |
Protein |
Calories |
Digestible pure |
Protein |
Starch |
|
2.5 |
0.271 |
2,646 |
0.40 |
0.48 |
1.9 |
|
3.0 |
0.294 |
2,903 |
0.42 |
0.50 |
2.1 |
|
3.5 |
0.316 |
3,160 |
0.45 |
0.54 |
2.3 |
|
4.0 |
0.338 |
3,417 |
0.48 |
0.57 |
2.5 |
|
4.5 |
0.360 |
3,674 |
0.52 |
0.62 |
2.7 |
|
5.0 |
0.383 |
3,931 |
0.55 |
0.66 |
2.9 |
|
5.5 |
0.405 |
4,188 |
0.58 |
0.69 |
3.1 |
|
6.0 |
0.427 |
4,445 |
0.61 |
0.73 |
3.3 |
|
6.5 |
0.450 |
4,702 |
0.64 |
0.76 |
3.4 |
|
7.0 |
0.472 |
4,959 |
0.67 |
0.80 |
3.6 |
Sur 1' adaptation des trypanosomes à 1' homme. [ The Adaptation of Trypano-
somes to Man.]—F. MESNIL. Bull. Soc. Path. Exot. 1930, July 9, Vol. 23, No. 7,
pp. 719—721.
Mesnil gives reasons for thinking that the occasional cases of infection of human beings with
purely animal trypanosomes are due to some special condition of the individual.
The case recorded by Vauccl supports the view that T. rhodesiense is in reality T. brucei adapted
to man. On the other hand, the observation made by Mesnil with Ringenbach in 1911, that in the
laboratory T. rhodesiense rapidly becomes susceptible to the action of human serum, led him to think
that T. rhodesiense was of recent adaptation to man.
The facts indicate that this adaptation may be purely accidental, and that no doubt is the reason
why T. rhodesiense occurs sporadically.
A practical conclusion that is drawn is that all kinds of trypanosomes should be handled with
the greatest caution. The chances of infection may be slight, but they are nevertheless real. (Re-
printed from Tropical Veterinary Bulletin, Vol. 18, No. 4, December 1930.)
Action of Formaldehyde on the Aggressive Substance of Blackleg Filtrate,
Bacterin and Aggressin.—JOSEPH P. SCOTT. Jour. Inf. Dis., xlvi (1930), 6, p. 460.
Concentrations of 0.5 per cent. formaldehyde increased blackleg aggressin, filtrates and bacter-
ins to their greatest potency. The increase in potency produced in these products is dependent on
the amount of aggressive substance developed in the culture from which the product is made.
Formaldehyde apparently acts on the aggressive substance in a quantitative manner. The presence