EXPERIMENT STATION REPORTS. 14<j 



IN'cIuiical — 



12 NoiijrnI Aniiiioiiiiiin ('ilinlc Soliilidii. hv A. .1. r.-iMcii. < '. S. 

 liobiiiwoii. 



13 — What is the Antij^en RosjM)iisiIjl(' loi- Hu; Aiili IkxIIos in Dorset- 

 niles KScrnni? by Ward (Jiltncr. 



14 — Iiifoctioiis Ahoi-lioti and Sfcrilil.v in raith\ by Ward (JiHner. 



15 — the Inilnence of (Vulain Acid-Dcsd-ovinj^- Yea.sls upon Lactic 

 Bacteria, by Zae Nortlirup. 



16 — The Bacterial Activity in Soil as a Function of Grain Size and 

 Moisture Content, by Otfo Rnlin. 



17 — An Invest ij?ation of Soil Temperature and some of the most Im- 

 portant Factors Influencing it, by Geo. J. Bouyoucos. 

 I'ress — 



28 — Grounding Lightning Rods, by A. R. Sawyer. 

 Special — 



50— Small Fruit Culture, by Frank A. Wilken. 



CO — Celery Culture in Michigan, by C. P. llalligan. 



61 — Spray and Practice Outiine for Fruit Growers, by R. H. Pettit, 

 H. J. Eustace. 



East Lansing, IMicli., June ^0, 1!)13. 



R. S. SHAW, 

 Director Experiment Station. 



REPORT OF THE BACTERIOLOGIST. 



Director R. S. Shaw: 



Dear Sir — The Experiment Station work of the Bacteriological Labora- 

 tory has continued throughout the past year along the same general 

 lines that were in operation at the close of the preceding year. We 

 have made an extra effort to place the results of our investigations 

 and endeavors in such form as to be of immediate and tangible service to 

 the farmers of the state without in any way interfering with the quality 

 of pure research. 



Concerning the soil investigations, I can with a certain degree of 

 safety predict the dawn of a new era as a consequence of the patient 

 and painstaking work of Dr. van Suchtelen with the loyal support and 

 admirable technic of Mr. Itano. For successful research in soil bac- 

 teriology, it would seem to me essential that there be prepared or iso- 

 lated the substance essential for the life and growtli of the soil micro- 

 organisms, viz: the soil solution. I have carefully followed Dr. van 

 Suchtelen's work and am satisfied that his viewpoint is correct and 

 that his results are based on correct ecological principles. It is also 

 clear to me that Avith this work ns a basis we are now in a position 

 to accomplish something fundamental biologically whether in micro- 

 biology or in plant ],hysiology. A geneinl outline of Dr. van Suchtelen's 

 M'ork is qur)foil directly: 



INTUODUCTIOX. 



"After a careful study of the literature of soil-bacteriology, I may 

 say that it is my conviction that most of the present investigations in 



