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Note
RAYMOND PEARL and FRANK M. SURFACE.
EXPERIMENTAL WORK. The function of a Poultry Department of an Agricultural College is three fold, (1) Teaching work, (2) Extension work, (3) Research or exijerimental work. First is largely imparting knowledge to regular and short course students. Second is varied in character since the requirements of different sections of Province or State largely determine the kind and amount of work. Lectures, demonstrations, Farmers' and Womens' Institute meetings, judging at Fairs, display exhibits, better Farming Specials, and such work comes under this head. Experimental work has the scientific and practical side to it. The amount of such work conducted by a College depends on funds available, the poultry public's demands for investigating poultry problems, adaptability of man in charge of department for carrying on such work, and also on the turn of mind of_ students, since a good deal of such work is done by students under the Professor's charge. There are two classes of experimental work, one of a scientific nature from.which 4 Prenant. De la valeur morphol. du corps iaune, son action physiol. et therapeut, possible, Rev. gen. d. sci., 1898. 6 Cf. Zuntz, L. Weibliche Geschlechtsorgane, Oppenheim's Handbuch der Biochemie, I I I , i, P. 377.
practical deductions must be drawn; and practical work which is applicable to all conditions giving material which the farmer can apply directly on his own farm. The latter class of work is what is appreciated since it carries less of the scientific and to the farmer mysterious atmosphere. Hard cold facts is what he wants. This element should be introduced into our experimental work. This College is new and has no long line of experimental work at its back. As a new institution about to enter on experimental work, we are confronted with a large amount of conflicting data on certain phases of work. We are at a loss which to take as authentic and accurate, or which line we should take up and do it over again. Also the work should be more conclusive in a good many instances, and cover a sufficient number of years to be reasonably acurate so as to be of real value to the farmer and poultryman. We should have more co-operation among Colleges so that each College would know what is going on at the other place to avoid duplication of work and to become familiar with what each institution is doing. Now is the time for organizing, as the Poultry Departments at a good many Colleges are entering on a new era. Larger appropriations, new poultry departments are continually being opened up at different Institutions. Widespread interest. People are asking for these departments. Larger appropriations should mean greater efficiency. Co-operation betwen different Colleges means better service to our Province or State. Poultry Departments at Manitoba Agricultural College, second youngest represented at this convention. Two and a half years ago it was opened, investment, $500.00. Today it represents an investment of $95,000-$125,000. Question in minds of all heads of new Poultry Departments is to what extent may we or should we duplicate experimental wprk that • has been conducted by other Colleges or Stations. H. C. HERNER.
NOTE. The 7th annual Purdue Egg Show will be held May 4, 5, 6, 1915. This is managed by the freshmen students taking Poultry and has always been a signal success. This year an opportunity will be given for experiment station poultry departments to enter eggs and compete against each other. The most interesting class in the egg show is the_ High School class for members of the different high schools throughout the state. A magnificent cup is retained by the winning high school for one year. Last year there were 287 entries in the egg show.
Downloaded from http://ps.oxfordjournals.org/ at Cornell University Library on July 28, 2015
earlier 5by Psenant* and Sandes and Skrpbansky. In connection with die series of studies in progress in this laboratory on the physiology of avian reproduction it seemed a matter of considerable interest to determine whether an extract of mammalian corpus luteum substance would exercise a similar inhibitory action on ovulation in a bird, where, of course, there is normally nothing connected with the ovary which is either morphologically or physiologically homologous to the corpus luteum of the mammalian ovary. The experiments here reported were undertaken for the purpose of throwing light upon this question. In the complete paper it is shown that the dessicated fat-free substance of the corpus luteum of the cow, when injected in suspension, in proper dosage, into an actively laying fowl immediately inhibits ovulation. The duration of this effect varies with different birds from a few days up to two or three weeks. After the bird begins ovulating again the laying goes on unimpaired. The same effect is produced by the injection of extracts of the lutear substance, either intravenously or intraabdominally. The active substance in producing the inhibition is inactivated by boiling. Further investigation of the subject is in progress.
EXPERIMENTAL WORK. The function of a Poultry Department of an Agricultural College is three fold, (1) Teaching work, (2) Extension work, (3) Research or exijerimental work. First is largely imparting knowledge to regular and short course students. Second is varied in character since the requirements of different sections of Province or State largely determine the kind and amount of work. Lectures, demonstrations, Farmers' and Womens' Institute meetings, judging at Fairs, display exhibits, better Farming Specials, and such work comes under this head. Experimental work has the scientific and practical side to it. The amount of such work conducted by a College depends on funds available, the poultry public's demands for investigating poultry problems, adaptability of man in charge of department for carrying on such work, and also on the turn of mind of_ students, since a good deal of such work is done by students under the Professor's charge. There are two classes of experimental work, one of a scientific nature from.which 4 Prenant. De la valeur morphol. du corps iaune, son action physiol. et therapeut, possible, Rev. gen. d. sci., 1898. 6 Cf. Zuntz, L. Weibliche Geschlechtsorgane, Oppenheim's Handbuch der Biochemie, I I I , i, P. 377.
practical deductions must be drawn; and practical work which is applicable to all conditions giving material which the farmer can apply directly on his own farm. The latter class of work is what is appreciated since it carries less of the scientific and to the farmer mysterious atmosphere. Hard cold facts is what he wants. This element should be introduced into our experimental work. This College is new and has no long line of experimental work at its back. As a new institution about to enter on experimental work, we are confronted with a large amount of conflicting data on certain phases of work. We are at a loss which to take as authentic and accurate, or which line we should take up and do it over again. Also the work should be more conclusive in a good many instances, and cover a sufficient number of years to be reasonably acurate so as to be of real value to the farmer and poultryman. We should have more co-operation among Colleges so that each College would know what is going on at the other place to avoid duplication of work and to become familiar with what each institution is doing. Now is the time for organizing, as the Poultry Departments at a good many Colleges are entering on a new era. Larger appropriations, new poultry departments are continually being opened up at different Institutions. Widespread interest. People are asking for these departments. Larger appropriations should mean greater efficiency. Co-operation betwen different Colleges means better service to our Province or State. Poultry Departments at Manitoba Agricultural College, second youngest represented at this convention. Two and a half years ago it was opened, investment, $500.00. Today it represents an investment of $95,000-$125,000. Question in minds of all heads of new Poultry Departments is to what extent may we or should we duplicate experimental wprk that • has been conducted by other Colleges or Stations. H. C. HERNER.
NOTE. The 7th annual Purdue Egg Show will be held May 4, 5, 6, 1915. This is managed by the freshmen students taking Poultry and has always been a signal success. This year an opportunity will be given for experiment station poultry departments to enter eggs and compete against each other. The most interesting class in the egg show is the_ High School class for members of the different high schools throughout the state. A magnificent cup is retained by the winning high school for one year. Last year there were 287 entries in the egg show.
Downloaded from http://ps.oxfordjournals.org/ at Cornell University Library on July 28, 2015
earlier 5by Psenant* and Sandes and Skrpbansky. In connection with die series of studies in progress in this laboratory on the physiology of avian reproduction it seemed a matter of considerable interest to determine whether an extract of mammalian corpus luteum substance would exercise a similar inhibitory action on ovulation in a bird, where, of course, there is normally nothing connected with the ovary which is either morphologically or physiologically homologous to the corpus luteum of the mammalian ovary. The experiments here reported were undertaken for the purpose of throwing light upon this question. In the complete paper it is shown that the dessicated fat-free substance of the corpus luteum of the cow, when injected in suspension, in proper dosage, into an actively laying fowl immediately inhibits ovulation. The duration of this effect varies with different birds from a few days up to two or three weeks. After the bird begins ovulating again the laying goes on unimpaired. The same effect is produced by the injection of extracts of the lutear substance, either intravenously or intraabdominally. The active substance in producing the inhibition is inactivated by boiling. Further investigation of the subject is in progress.