256 STATE BOARD OF AGRICULTURE. 



by tlic iiodiilc foniiiiiji' l»;u'toi-i;i niid vinegar niul pickle fermeiitalions. 

 Ills reporl is «iiven liolow aiul iiicliules nieiitioii of work done under his 

 direclion by <;raduale sindenis and assistants: 



TTnder the Adams jtroject, Kee[»ing Qualities of Butter, i)arts IV, 

 ''('ream I\ii)ening and lis Influence'' and V, "Pasteurization and Its 

 Influence/' re]iresent work done on Ihe same samples and will be offered 

 soou in bulletin form for i)ublicaliou. 



A contribution to part IV, which has for its purpose the following of 

 various groups of micro-organisms from Ihe cream to the butter, repre- 

 sents the dafa secured by Kurt Peiser in his study under my direction 

 for a Master of Science degree, arranged and discussed in bulletin form 

 and presented for publication. 



A contribution to Part V which has for its purpose the study of 

 factors influencing the resistance of bacteria in cream to the heat of 

 ]>asteurization is assembled and arranged from a part of the work done 

 for a Master of Science degree by Mr. Peiser. This also is offered in 

 bulletin form for publication. 



During the year work on part VI '"The Study of the Micro-Flora of 

 Butter" has been continued. The object here is to ascertain the indi- 

 vidual action of a number of the micro-organisms commonly found in 

 butter upon the constituents of milk in order to obtain a better under- 

 standing of their action in butter. This work is not ready at present 

 to offer for publication. 



Additional data have been added to the, "Study of Starters." This 

 work is, in reality, a branch of the main subject and, when completed, 

 can be presented logically under the head of "Keeping Qualities of 

 Butter." 



The data upon the "Fermentation of Brine Pickles" secured during 

 the year is being assembled in bulletin form for publication, but is 

 not ready for presentation with this report. The object of this work is 

 to determine the nature of the normal fermentation in order that ab- 

 normalities may be adjusted and that much of the spoilage may be pre- 

 vented. 



Tke work upon the "Viability of Ps. radicicola under Aerobic and 

 Partial Anaerobic Conditions" has been pursued under my direction 

 by F. O. Ockerblad as part requirement for a Master of Science degree. 

 As soon as it can be arranged in bulletin form it will be offered for 

 publication. The purpose of this work is to study the conditions affect- 

 ing cultures of nodule-forming bacteria and to ascertain their wellfare 

 when distributed for seed inoculation. 



The distribution of cultures of nodule-forming bacteria, of lactic 

 bacteria, of the alcohol-acetic micro-organisms, and of pure cultures 

 from stock room for commercial, experimental or educational purposes 

 has been conducted largely by Mr. Ockerblad, assisted by Mr. C. G. 

 Nobles. The number of different cultures sent out from this laboratory 

 during the year is tabulated as follows: 



