445 



Peach trees, winter protccUon (pp. 3-8). — Notes and tabnliitod dntaon 

 an experiuieut in which four trees, 3 years old, were bent (»\er to the 

 ground and covered with straw to the depth of about 1 ineh, 



A self-regulatinj:; inaxiinum anrl iniiiiimiin tliirnioineter was plaot-d inside with 

 each tree. One of these trees was supplied with an arianjicnient for vcntihition, and 

 was opened rejruhirly in tlie morning and closed at night. The other tree was opened 

 once a day and then only long enough to read the thermometers. The two remain- 

 ing trees were not opened from the time they were covered until they were uncovered 

 in the spring. * * * 



The effects of covering trees, as shown by this experiment, were: 



(1) Trees covered during cold weather were subject to less variation of tempera- 

 ture than when unprotected. This was more marked when the change was sudden 

 and of short diu'ation. 



(2) In cold weather the trees were warmer and in warm weather they were colder 

 than the outside atmosphere. * * * 



(3) No perceptible injury was done to the trees or the crop in laying the trees down. 

 I'hey blossomed as full and set their fruit as well as trees not treated. They also 

 held and ripened their fruit and made as healthy a growth as the other trees. 



Pear blight (pp. 8-10). — Observations on the station orchard are 

 reported which indicate that the germs of the pear blight {Micrococcus 

 nmylovorus) spread in the direction of the prevailing winds, and that 

 the blight works downward on the trees. 



Temperature andrninfaU (pp. 11, 12). — A tabulated record of the min- 

 imum and maximum tcmiK'ratures and of the rainfall at Columbia, Mis- 

 souri, April-September, 1801. 



Strawberries (pp. 12-16). — Notes and tabulated data on 102 varieties. 



Potatoes (pp. 17-21). — In a test of 10 varieties grown from Northern 

 seed (1891) and home-grown seed of the second and third years' plant- 

 ing (1889 and 1890) from Northern seed, the yield was largest in the 

 case of 10 varieties from Northern seed of 1891. Tabulated data are 

 also given for 68 varieties tested at the station. Dictator and Early Sun- 

 rise have been the most productive varieties during the past 3 years. 



Seedlimi Jruits (p. 21). — A brief note on experiments with grapes, rasp- 

 berries, and straAvberries. 



Nevada Station, Bulletin No. 13, October, 1891 (pp. 40). 



Sugar beet experiments, II. H. McDowell, B. S., and N. E. 

 Wilson, B. S. (figs. 4). — An account of experiments in growing 

 sugar beets at the station and by a number of farmers in Nevada. Data 

 regarding the cultivation and growth of the crop and the analyses of 

 samples are given in notes and tables. At the station and in many 

 cases elsewhere irrigation was enii)loyed. The varieties used were 

 Dippe Klein Wanzleben and Vilmorin Improved, from U. S. Department 

 of Agriculture; Desprez, from Grand Island, Nebra.ska; and Improved 

 Klein Wanzleben and Betterave a Collet Rouge, from Watson ville, 

 California. 



