962 EXPERIMENT STATION RECORT). 



carried on flurins lOO.VC. particularly tliosp cniKliicted uiuler the aiispir-es oi' 

 the Office of Exiierinient Stations. 



Nutritive requirements of the body, F. (i. Benkuict (Lake J'liicid Conf. 

 Home Ec())i. Pioc. S (JOOIl), pp. 6V/-76"). — A sunniiary and discussion (if the 

 frntlior's investigations which led to the conclusion that the conunonly accepted 

 dietary standards should not be appreciably lowered, especially as regards 

 energy. A fuller account of the investigations has been previously note<l (E. S. 

 R.. IS. V. 4(i4). 



Dietetic experiments at Yale University, I. Fisher (Lake Placid Coiif. 

 Home Econ. Proc.. S (1!)06). pp. 77;-7.S). — Nine healthy students were the sub- 

 jects of an investigation covering IS weeks, in which freedom of choice of food 

 materials was given and very thorough mastication was insisted ui)on. 



The author notes that the quantities of food eaten were less than usual, that 

 the diet supplied less nutritive materials than are called for by the conunonly 

 accepted dietary standards, and that there was an especially marked diminution 

 in the quantity of tiesh foods desired. The men led sedentary lives and toolc 

 practically no exercise. Gymnasium tests at the beginning and end of th<' 

 experiments showed that their endurance was markedly increased. In the 

 author's opinion this is to be attributed to the cha'-acter of the food and the 

 way in which it was eaten. -Control experiments were not made. The i)aper 

 is followed by a discussion. 



Physiological economy in nutrition, I. Fisher (Seieiiee, n. ser., 24 (1906), 

 Xo. 620. />/>. (hil-6.i3). — The investigations briefly reported are noted above. 



A respiration calorimeter, Letulee and Mi.i.e. I'ompilian [Compt. Rend. 

 Acad. 8ei. [Paris], l.',3 {1906). No. 23. pp. 932. 933. dijm. J).— A respiration 

 calorimeter of special construction is briefly described. It consists essentially 

 of a chamber of glass and iron surrounded by 2 outer wooden walls. By means 

 of the air spaces between these walls the temperature of the inside and outside 

 of the respiration chamber is kept the same. The heat produced in the respira- 

 tion chamber is taken up by a current of water passing through the calorimeter. 

 It is stated that the regulation of the temperature of the calorimeter and the 

 surrounding air spaces is automatic and that any tenqierature between 12 and 

 24° C. may be maintained in the chamV)er. According to results of electrical 

 calibration tests the calorimeter will measure heat with an accuracy of 90.") 

 ]ier cent. 



As a respiration apparatus, the instrument described is of the closed-circuit 

 type, the ventilating air current being maintained by means of a pump. Devices 

 are provided for absorbing the water and carb(m dioxid of the respired air and 

 for replacing the oxygen withdrawn from the air. 



The published description does not give details of the method of c(mstructi()U 

 nor of the operation of the respiration calorimeter. 



The respiration apparatus in the new physiological institute at Helsing- 

 fors, R. TiGERSTEDT {Skaiid. Arrh. Pln/siol. JS {1906). No. 3-',. pp. 298-30.')). — 

 The respiration apparatus which has been recently constructed at Helsingfors 

 is similar to the instrument at the Carolien Medical-Surgical Institute at Stock- 

 holm previously described (E. S. R., 8, p. 242). As shown by control experi- 

 ments in which candles were burned in the respiration chamber, the instru- 

 ment is sufficiently accurate for experimental purposes. The experimenters 

 recognize that the experimental periods should not be of too short duration. 



Concerning gastric juice secretion, B. L()NNqvist {Skand. Arch. PhysioT., 

 18 {1906). No. 3->i. pp. 19.'i-262. df/nis. 3). — The numerous experiments reported 

 were made with a dog which had been operated upon by the Pawlow method to 

 produce a so-called small stomach. 



