302 



believed albinos always propagated albinos. They certainly do 

 through several -generations. 



Dr. "Weinland said he had noticed that if one of the parents 

 has a single dark spot, however small, the pigment shows itself 

 first in the eye of the offspring. 



DEPARTMENT OF MICROSCOPY. 



Dr. S. Durkee exhibited some of the Red Snow {Pro- 

 tococcus nivalis) from Greenland, belonging to the Bailey 

 collection. 



Mr. John Green stated that he had found the same or 

 a similar plant near Portland, Maine, growing in the hol- 

 low of a rock. The plant contained in its cells nuclei of 

 a greenish color. 



December 16, 1857. 



The President in the Chair. 



Mr. Charles Stodder read a report upon the substance 

 known as Gum Lahoe, which was referred to him at the 

 previous meeting for examination, as follows : — 



GUM LAHOE. 



The specimen is an amorphous mass, made up of foldings of 

 two colors, shades of brownish drab with some very dark brown 

 spots, which seem to be derived from bits of bark and wood. 

 The two shades of drab appear to be identical in every respect 

 except coloi'. It has a slight peculiar odor, is somewhat friable, 

 as it breaks before a knife, and is non-electric. It bears no 

 resemblance whatever to caoutchouc, or any of the varieties of 

 the so-called gutta percha. Its external characters mostly resem- 

 ble those of pitch. 



