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More salt (offered ad libitum) and more water were consumed and more urine voided on pelleted than on ground alfalfa hay. The greater intake of both salt and water were attributable to form of forage per seand were independent of one another.Over a range of pelleted alfalfa intake from about maintenance to ad libitumintake, water intake was much more closely related to forage than to salt intake. The partitioning of water loss between urinary and other routes of disposal was much affected by level of forage intake; evaporative and fecal loss became more important, and urinary less so, as forage intake increased.The appetite for salt offered free choice decreased as the level of forage intake was increased to ad libitumintake. All levels of salt intake were much above requirements, and this result was considered more closely related to appetitence generally than to a physiological need for sodium or chloride.At levels of salt intake which did not exceed ad libitumintake, water intake and urine output were not related to salt consumption.Levels of salt eaten ad libitumby sheep depends to a degree on the level to which they have become accustomed. Appreciable individual differences in salt and water intake exist among individual sheep that are homogenous as to breed, sex, age and previous treatment. These individual differences in salt and water intakes, however, do not appear to be closely correlated.

The objective was to determine whether there is any advantage to co‐grazing, i.e., the grazing of cattle and sheep together, relative to grazing either species separately. The study was conducted over four successive grazing seasons on a highly fertilized sward that was a mixture of Ladino clover (Trifolium repensL.) and orchardgrass (Dactylis glomerataL.) the first season and nearly pure orchardgrass thereafter. Two apparent effects of co‐grazing were observed: First, an increase in rate of gain of sheep grazed with cattle at a ratio of five sheep per steer. This greater rate of gain, however, did not result in a greater liveweight gain/ha of cattle and sheep combined. Available forage was maintained at fixed levels, and the lack of any advantage in total gain/ha to co‐grazing at a ratio of 1 steer per 5 sheep is discussed in relation to similar experiments in which an advantage to co‐grazing was observed, but in which the effects of cattle:sheep ratio and available forage were confounded. Second, at one sheep per steed the animals were cograzed without affecting the rate of gain of the steers, but with an apparent increase in liveweight gain/ha relative to either cattle or to sheep grazed separately. This apparent effect of co‐grazing, however, was probably the result of a subtle increase in stocking rate that could have been brought about by either species independently of the other and, therefore, is not attributable to cograzing per se.

Mature rams and ewes treated with 15, 20 or 30 mg of cyclophosphamide (CPA) per kilogram of body weight were observed over the period after the wool loosened and could have been removed until the regrowth of wool appeared. The wool, however, was not removed, but was allowed to come off as it would. The percentage of area from which wool had been lost was estimated on the head, neck and brisket, the shoulder, the side, the hip and the belly on days 16, 21 and 28 after treatment. These areas were contiguous and covered the whole wooled surface of the sheep. Wool regrowth was scored on the shoulder on days 16, 21, 28 and 32 after treatment.The retention of the fleece over time was greater with decreasing CPA dosage. Also, appearance and rate of regrowth increased with decreasing dosage. These results are discussed in terms of the known action of cydophosphamide and also in terms of the practical management of a chemical defleecing operation.

In terms of its biochemical mechanism, the action of cyclophosphamide (CPA) as a defleecing agent is unknown. Its effects on the wool fiber, however, are understood (Dolnick et al., 1969). The individual wool fibers are constricted under the influence of the drug. Thereafter, the growth of the fiber carries the constriction toward the skin surface, and fibers break, or can be broken, at the point of constriction.The objective of the study was to determine whether the rate of wool loosening is “all or none”, i.e., independent of CPA dosage, or whether the response is dose dependent.Seventeen ewes and five rams were randomized within breed and sex to each of three groups. The distribution of breeds within groups and within sex is shown in table 1. All of the sheep were 2 years old or older. All had been conventionally shorn 27 weeks previously. None had ever before received CPA.

On the basis of previous theoretical formulations it was predicted that schizophrenics would score lower on a test of stimulus-seeking behavior than would nonschizophrenics. The prediction was tested by comparing 74 schizophrenics with 40 nonschizophrenic psychiatric patients and 45 college students. The test of stimulus-seeking behavior was Howard's Maze A. The results supported the prediction. Differential performance was inconsequentially related to age, education, intelligence, and length of hospitalization.

Early cut crownvetch (Coronilla varia L.) and alfalfa hays of similar chemical composition were compared in a 70‐day feeding experiment, using 6‐month‐old crossbred wethers. The two forages in either pelleted or ground form were fed ad libitumas the sole diet. Liveweight gain was greater on alfalfa than on crownvetch and greater on pelleted forage than ground forage. Forage consumption was generally high. Consumption of pelleted forage was considerably greater than that of ground forage. Digestibility of crownvetch was generally less than that of alfalfa. Overall, the lesser liveweight gains on crownvetch were attributable to its lesser digestibility and, in the case of ground forage, to its lesser consumption as well. The differences in digestibility of the structural components of the two forages did not appear to be related to the degree of lignification of lignocellulose.

Several letters to the editor are presented in response to articles in previous issues including "The Hippies" in the July 7, 1967, the "The Rich Get Richer," in the June 30, 1967 issue and the story on the Monterey Pop Festival in the June 30, 1967 issue.