172 THE MICROSCOPE. Nov. 



A. Sap circulates by preference through the fibro 

 vascular bundles of a plant, but every living- cell can absorb 

 sap and tradsfer it to contiguous cells. The sunflower 

 stem has" a ring of fibro vascular bundles in the condensed 

 tissue beneath the cuticle. 



SCIENCE-GOSSIP. 



The Change Produced in Meat by Freezing. — The 

 character of the meat consumed nowadays has become a 

 serious hygienic matter. In a pharmaceutical journal, 

 published in Germany, a writer describes a simple process 

 for distinguishing between fresh meat and that which has 

 been preserved in the frozen state, viz., the expressing of 

 a small quantity of blood or meat juice from the sample, 

 and its examination under the microscope. The whole 

 operation must be performed quickly, in order to prevent 

 any drying up of the liquid under examination. When the 

 juice of fresh flesh is thus examined, it is seen to contain 

 numerous red corpuscles, which are normal in color and 

 float in clear serum. But in the case of blood from frozen 

 flesh the corpuscles have dissolved in the serum under the 

 influence of the lower temperature, and not a single normal 

 red corpuscle can be seen — the haemoglobin escapes into 

 the serum and appears as irregular yellow-brown crystals. 

 These may be frequently seen by the naked eye, but in 

 every case can be readily detected under the microscope. 



Death After Antitoxin Explained. — A full and satisfac- 

 tory explanation of the sudden and tragic death of the little 

 son of Dr. Langerhaus immediately following an injection 

 of antitoxic serum, has been reached through the subse- 

 quent investigation. In the first place, the analysis of the 

 serum proved it to be reliable, and no irregularity in the 

 method of its administration could be discovered. It was 

 found, however, that the child had just completed an un- 

 usually heavy meal, and as the necropsy showed, his larjmx 

 and trachea well filled with a material identical with that 



