24 EXPERIMENT STATION RECOKD. 



more experiiueiitation is needed to establish tbe phenomena on a tirni basis of 

 positive fact. 



The occurrence of formaldehyde in plants, S. Nizza (Malpicihui, 20 (1906), 

 \o. S-9, ijp. S05-.'/05). — A considerable number of herbaceous and ligneous 

 plants were tested by different methods to determine the presence of formalde- 

 hyde. It is claimed that Pollacci in 1890 showed that the in-esence of formalde- 

 hyde in plants was not due to the chlorophyll activity of the plant and was 

 independent of solar energy. As a result of his studies, the author concludes 

 that formaldehyde exists in the woody part of plants and its abundance is in 

 proportion to the development of ligneous tissue. It is not foinid in the green 

 parts of the plant, and its formation is independent of the presence of light 

 or of the assimilatory processes of the plant. Formaldehyde is considered by 

 the author to be an integral part of the woody tissues of plants and it is 

 believed to originate in those tissues. 



The recognition of glucosids in plants by means of emulsin, E. BouR- 

 QUELOT (Arcli. I'Jninii.. ,l'i-j (1901). Ao. S. pp. 172-180). — A report is given of the 

 examination of about 50 species representing 7 or 8 families of plants, to deter- 

 mine the presence of glucosids. Fresh and dried portions of plants were used. 

 By the addition of enmlsin to the macerated material andexamination with the 

 ])olariseope. the occurrence of glucosids was determined. 



Linamarin, a cyanogenetic glucosid of flax, A. Jorissen {Acad. lioy. Bclg., 

 Bill. VI. ScL, 1901. Ao. /. pp. 12-11). — In this communication the author calls 

 attention to a publication iu which he announced in 1884 the presence of a 

 cyanogenetic glucosid in flax to which he gave the name linamarin. 



FIELD CROPS. 



Annual report of Alaska Agricultural Experiment Stations for 1906 

 [Field crops], C. C. Georgeso.x {Alusho ^ta.s. Rpl. 1900. pp. 38-50, pi. 1). — 

 Brief notes are given on the crops grown at the various stations during the year. 



lFo/7i- at the Copper ('enter Station, J. W. Xeal. — This station has now about 

 40 acres luidcr cultivation and 80 acres of fenced pasture land. Alsike clover, 

 alfalfa, Auropijron teiieniiii. Festiica elatior. HoRus lanatus, redtop, orchard 

 grass, timothy, Essex rape, and Bronnis iiicrniis were grown in 20 by (JO ft. plats 

 on a tract of heavy moist soil. Alsike clover and alfalfa did not give good 

 results. Ai/ropprou teiieriiin made a growth of 20 in. during the season and 

 seemed very promising. Timothy also made a good growth and a yield of hay, 

 amounting to ().114 lbs. ]»er acre, was secured. BromuH inermis was found valu- 

 able for spring pasture, lait not profitable as a hay crop. 



None of the different varieties of wheat grown matured seed. A better 

 growth was secured on new ground simmier-fallowed and fertilized with guano 

 at the rate of al»out 400 lbs. per acre than on old ground cropped the year before 

 without the vise of fertilizei-. In many instances the crop reached a height of 50 

 to 52 in. 



Barley also grew best on the fertilized plat summer-fallowed. (Jrain was 

 matured on only one well-protected plat. On other plats the crop was killed 

 by frost August 24. Chevalier, Champion, ^lanshury, and Odessa were appar- 

 ently earlier than other varieties. On the best plats the crop stood from 40 to 

 45 in. high. 



On light, dry soil in a protected location a small amount of oats matured. 

 Finnish Black, Banner, Burt Extra Early, and Swedish Select were ripe enough 

 to cut Seiitember 5 an"d 200 lbs. of seed were secured. Burt was the latest of 

 these varieties, .-uid Sixtv-Da.v. which was still later, was nearlv all killed bv 



