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A new dairy barn was built in 1951.

The present report gives a review of some results of the vertebrae counts of sprat from the years 1927-1949. Within each sample of sprat of the 0-group there is generally a positive correlation between the size of the fish and the number of vertebrae. The positive differences between the average number of vertebrae of "large" and "small" fish of the same sample is generally smaller than 0.40. It has been shown that samples taken at the same locality within a short space of time may differ significantly as to the frequency distribution for number of vertebrae. It is therefore difficult to obtain representative samples from a certain locality. For this reason a comparison with respect to number of vertebrae of sprat from diffelrent year classes, and from different waters, may be of doubtful value. Our samples can not be considered representative of more than the shoals from which they have been taken. In each year there may be significant differences between the samples as to the average number of vertebrae, indicating that the shoals from which they have been taken are of somewhat different origin.

Oxidation by a glycol-cleavage reagent has proved that the acid-labile methoxyl groups in methanolyzed cellulose are linked in glycosidic combination (1 per molecule), and not in an acetal structure, which would require 2 such groups per molecule. Evidence confirming the glycosidic structure was obtained by fractionating methanolyzed cellulose to the point where number- average molecular weights must be calculated on the basis of 1 methoxyl group per molecule. The rate of removal of methoxyl groups from methanolyzed cellulose upon acid hydrolysis was reinvestigated. The rate is roughly comparable to the rate of hydrolysis of methyl gluco pyranosides. These findings contradict the basis for a claim, based on copper-number deter minations, that the methoxyl groups of methanolyzed cellulose are very rapidly hydrolyzed and are of the acetal type.

Heavy nitrogen fertilization of cantaloupes does not lessen the severity of infection caused by the mosaic virus, nor does it increase the yield of marketable fruit. It increases cantaloupe size and reduces the number of culled fruit.

The importance of cyanogenetic glucosides in plants is dependent on the fact that when the plants are ingested the glucoside is hydrolysed, either by an appropriate enzyme or by ruminal microflora with the release of free HCN which when absorbed in sufficient quantity may be toxic to the grazing animal. Plants which are cyanogenetic occur in a number of genera of the plant kingdom but the toxicity of such plants is a function of a number of factors which involve the animal as well as the plant. A general survey of the literature on the factors involved in HCN content of plants is presented. Literature pertaining to stock poisoning by pure cyanides, cyonogenetic glucosides and cyanogenetic glucosides in plant material is also reviewed. Studies on the seasonal variation in the glucoside content of white clover, made on four single plants of different glucoside content, are described. The results of a similar study with twelve genetically identical plants, are also presented. Results of investigations into HCN content of the different organs of the white clover plant are also reported.

X. campinense n. sp. is described. It is a Xiphinema closely resembling X. pratense Loos, 1949, from which it is distinguished by its measurements, by the absence of any cuticular transverse striatum as well as by the number and location of the caudal papillae.