Growth and Appetite in the Rat. 



127 



table 11. 



POIKILOTHERMOUS DECEREBRATE PlGEON. 



Date. 



Time. 



Temperature of Cage. 



Body 

 Temperature. 





12.15 P.M. 



30° C. 



40.2 0 C. 





2.00 P.M. 



30° C. 



39-0° C. 





4.00 P.M. 



30° C. 



40.0 0 C. 





4.15 P.M. 



.4 c.c. of pituitrin 







5.30 P.M. 



30° C. 



431° C 





6.00 P.M. 



30° C. 



43-2° C 





7.30 P.M. 



30° C. 



43-5° c. 





9.00 P.M. 



24° C. 





Nov. 7 



10.00 A.M. 



24° C. 



32.0 0 C. 



The rise in body temperature persists for twelve to twenty- 

 four hours and then falls to a level determined by the environ- 

 mental temperature. 



We have been unable to continuously maintain the body 

 temperature at the normal level by pituitary extract alone without 

 the aid of the warm incubator. Frequently repeated injections 

 of the extract lead to the death of the animal preceded by weakness 

 and general prostration. 



A number of quite different factors seem to be involved in this 

 thermic reaction. Further details and discussion will be presented 

 later. 



62 (1809) 



Relation of splenectomy to growth and appetite in the rat. 



By ARTHUR H. SMITH and LEAH ASCHAM. 



[From the Sheffield Laboratory of Physiological Chemistry, 

 Yale University, New Haven, Conn.] 



With a view of studying the alleged effect of splenectomy on 

 appetite and growth, 1 experiments were carried out on white rats 

 using the standard feeding technic of Osborne and Mendel. The 

 growth was thus accurately measured and the qualitative as well 

 as quantitative aspect of the food intake carefully controlled. 

 Sixteen rats were splenectomized as nearly as possible at the age 

 of 40 days. Of these, five were observed for 34 weeks, three for 43, 



1 Richet, J. de Physiol, et de Pathol., 1912, xiv, 689; 1913, xv, 579. Prym, 

 Verhand. des Kongr. f. innere Med., 191 1, xxviii, 398. 



