Where sending this way would take a© imaeh tine that the 

 materia} would pro'fcably spoil, instead of water use a mixture of 

 equal parts of w'dtor and alcohol; this destroys the color, bvit 

 preserves the structuro for examination at any time 



Species belonging to the Nostoeaceae, using this word with 

 the same extension as in the "Middlesex Flora", ean be examined 

 quite well after being dried in a thin layer on paper or mica; but 

 sueh herbarium specimens of other algae are generally unsatisfactory 

 the shape of the cell and the arrangement of its contents being 

 much changed in drying. It is well, however, to have such speci- 

 mens in addition to fresh or alcohol material. 



Sterile specimens of species of Vauoheria, Oedogoniaceae 

 and Conjugata generally are worthless for determination, butit is 

 always difficult, often impossible to tell whether a plant is in 

 fruit except by microscopio examination. It may be noted however 

 that usually the plant in its vegetative (sterile) eonditicn is 

 of a deeper and richer green, and is generally a handsomer object 

 than in the fruiting condition. As it is s© difficult to toll what 

 is and what is not of value, the safest way, in case of doubt, is 

 to collect too much rather than too little. 



Algae growing on moist and dripping rocks should be carefully 

 scraped off with a knife, they are usually of kinds that can be 

 preserved to advantage en paper or mi«a. 



Every specimen should be accompanied by a record of the 

 name of the collector, and of the exact loeality and date of 

 collection; the- charge, or ef the station should also be indicated, 

 for instance; dear running brook; dripping rock; swamp; bark of 

 white oak; ete», etc. 



