No. 144.] Ill 



appearance of the oily particles, the butter, their perfectly sphe- 

 rical form, from the largest to the smallest globules, without the 

 least cloudiness, are the characteristics of perfectly pure milk. 

 Here are drawings of them on our table. The milk of wet nurses 

 is proved by the microscope. There is found a great variety in 

 the nutritious qualities of diiferent nurses. 



An exceedingly beautiful and wonderful sight is the circula- 

 tion of the blood in a trout (just hatched), scarcely half an inch 

 long : the rapid flow of the blood through its arteries, and its 

 return by the veins. 



I am not surprised at the enthusiasm of Ehrenberg's imagina- 

 tion when I behold these minute creatures, the volvox, orb within 

 orb, instinct with life in every part, rolling onward in beauty and 

 magnificence beyond conception to any one who has not beheld 

 them, unceasingly revolving their brilliant emerald forms in sjtor- 

 tive grandeur^ while the deep rubies, that eyes seem to be, com- 

 plete the splendor of their gorgeous bodies. This may well lead 

 us to fervent adoration of the Almighty Creator. — Journal of the 

 Society of Arts^ London^ May 26, 1854. 



N. B. by Meigs. — These observations all tend to the knowlege 

 of agriculture, and as we go on to learn, will, from time to time, 

 take a place in our practical lessons, for we think that all our 

 knowledge is in infancy. 



Some weak modern philosophers continually attack holy writ 

 with their geologicals ; they require six million times six thou- 

 sand years to do the cosmogony. So many Infusoria at work for 

 countless ages, (inter alios.) Now Ehrenberg says that a single 

 individual of the Hydatina seuta produce in twenty days a mil- 

 lion ! calculate then the geometrical progress for 1,000 years. 



Sporules. 

 The word is from the Greek C'^i-op^, a seed, and the diminutive 

 ule, a little seed. Why not have it so at once, in a lesson for Eng- 

 lish ears. 



In treating of the Fungus family, or as he calls it, "Fungales," 

 he quotes all the best authorities as usual. Fries is opposed to 



