FERMENTATION — BA< TEBIOLOOT. 74'.' 



Erienmeyer flask, with iam carbonate if either were required, 



the iia-k \\m- plugged with cotton wool, and the Liquid -t.-riliz.-l by heating to boil 

 ing for a few minutes the inoculation of the culture liquid ' mil, in the 



moisl condition, were shaken with 100 the soil allowed to settle, and - I 



of the infusion were added t<> the liquid, the same quantity being used f..r • 

 flask in . 



detenninations ide in duplicate, 



the soil infusion an be, by means of a blank test The blank a tpin 



- the other, but was -t.-riliz.-l after the soil infusion ha.i ' 



added. 



"The - r bath and kept at 33° for - at first, and 



week, as then- was a little train of nitrogen during ' 



re then transferred to Kjeldahl flasks, evaporated 

 the addil small amount of sulphuric acid, and nitrogen determined 



by the Kjeldahl method." 

 Tlu- following in a summary of the more important results obtained: 



Hie nitrog irimilating bacteria wen - in an alkaline medium 



•.liniiiir i^lti. > »~«-. potassium ph - - dium chlorid, calcium carbonate, mag- 



nesium sulphate, and ferric chlorid in the prop - a - live when the 



a sulphafc - tted, and very much -- tral liquid con- 



taining mannite, potassium sulphate, ferric chlorid, an-! - 



'■ - I' - -- :<? that in some soil- there are nitrogen-assimilating bacteria 

 which are more active in an alkaline medium, and in other -oils those which 

 more active in a neutral medium. 



Addition of magnesinm chlorid or the substitution of glucose by starch did 

 not in< easel - nitrogen. 



" (4) Slight _ - -- dlated in two weeks' than in one v.. 



•• 5 The nature of th< - - I for inoculating the medium is probabl] 



Bacteria and yeasts in their domestic and agricultural relations, F. Kienitz- 



: 11 ■ - I Land- 

 Berlin: I 

 100. —After dk - g the distribution, historical investigations, an«l 



met! - ^organisms ermentation and infection, the auth e - riefly 



an account of the methods recommended for the preservation of f < « •« 1 s . an-i I - 

 the life history of numerous bacteria, .- .'1>. etc A chapter is devoted to 



the general subject of alcoholic fermentation and the methods now in use, i 

 which acetic, lactic, and butyric acid fermentations are described. The function of 

 ria in cellulose fermentation, in retting flax, - inted oat, and a treneral 



- - -_ en of the role of bacteria in niti g - milation. 

 The a t of bacteria as causing o -tain diseases, such 



:ithrax. tuberculosis, influenza, diphtheria, etc, and the more recent ideas 



- - - given. 

 The action of metallic alkaline earths on yeasts. N. C. Pauuboo ' ompt. 

 - . [Pari.-]. —A study has been made of 



the possible relationship between the minimum quantity of the >alt- of calcium, stron- 

 tium, barium, and magnesium required to check the elimination of carbon «li< »x i«l by 

 i the molecular weight of those salt.-. Cnlturesof yeasts were prepared 

 and varying quantities of different salts of the above metallic alkaline earth- wer.- 

 added to the - iti os. The limit was found to l>e approximately repre-ented by the 

 molecular weight of the compound divided by 1.1. showing that the inhibiting 

 varied with the molecular w< t 

 Laboratories in agricultural bacteriology, II. I.. RoBSmx . Sto. BpL 



1904. j'p- —A detailed account L- given of the bacteriological Labora- 



in the new building of the Wisconsin Station E. >. K., 15, p. 6). 



