June] EDWARDS— ON TRICHINA SPIRALIS. 183 



means ; it is also found that other animals, as the dog and 

 pig, for instance, may partake of the food and yet escape 

 infection. This helps to explain the recorded facts that 

 large parties have eaten of trichinous food in comp;iny, and 

 some have been killed, others suffered slightly, and again 

 some escaped altogether. 



Moreover, in the human subjects examined post-mortem^ where 

 the disease has not proved fatal, in some cases, the cysts were 

 by no means numerous, whilst in others they have been 

 estimated at from forty to one hundred millions. The 

 excessive alarm which is apt to seize the public mind b^ 

 the discovery of a case here and there is not, therefore, 

 justified by the fticts when properly understood. At the 

 same time, whatever means can be adopted by the public 

 authorities to prevent its becoming a familiar disease in our 

 new Dominion should be forthwith adopted. 



REMARKABLE LUNAR PHENOMENON. 



By C. Smallwood, M.D., LL.D., D.C.L. 

 A somewhat rare and singularly beautiful phenomenon occurred 

 between the hours of 9 and 10.20 p.m. of the 25th January, 

 1869, at this place (Montreal.) 



It has been said that haloes and coronoe are very seldom or ever 

 seen around either the Sun or Moon at the same time, and that 

 their existence is very rare, and has been seen but by very few 

 observers; but such was the case in the present instance, and 

 deserves to be placed on record. 



" The moon of the winter's night had hid the stars, 

 A how of beauty, rich in shades of light, 

 Had circled in a crown of golden rays ; 

 The snow lay stretched in beds of silvery white." 

 The sky at 8 p.m. was quite free from visible clouds ; the 

 moon shone with a brightness peculiar to our Canadian climate; 

 but few of the stars were visible. The Moon's age at noon 

 was 12.9 days. The Barometer at 9 p.m. stood at 29.710 inches 

 Thermometer at 0*^ (zero) with light breezes from the West. 

 At 8.30 p.m. very light and indistinct cirrus clouds began to 

 form in the Zenith, very minute, and at a very high altitude. 

 They somewhat rapidly increased in size and density, mingling 

 with a slight cumulus which had formed in the West, and were 



