374 PHILOSOPHICAL TRANSACTIONS. [aNNO I677, 



The third and last part, which is canonical, as the first has been didactical, and 

 the second apodictical, is drawn much after the pattern of Helvicus the Ger- 

 man chronologer, as is owned by the author himself, which is one of the most 

 comprehensive and best forms that is extant. 



II. A Touchstone for Gold and Silver Wares, or a Manual for Goldsmiths, 

 and all other Persons, whether Buyers, Sellers, or Wearers of any Manner of 

 Goldsmith's work, &c. By W. B. of London, Goldsmith, in 8vo. 



END OF VOLUME ELEVENTH OP THE ORIGINAL. 



Some Agrestic Observations and Advertisements , from Dr. John Beale, communi- 

 cated to the Editor. N° 133, p. 81 6. Fol. XII. 



These observations are of no use now. 



Observations on Animalcula seen in Rain, Well, Sea, and Snow -ivater; as also' 

 in Pepper-water. By M. Leewenhoeck. N° 133, p. 821. 



In the year 1675, I discovered very small living creatures in rain water, which 

 had stood but few days in a new earthen pot, glazed blue within. This invited 

 me to view this water with great attention, especially those little animals appear- 

 ing to me ten thousand times less than those represented by M. Swammerdam^ 

 and by him called water-fleas, or water-lice, which may be perceived in the water 

 with the naked eye. 



The first sort I several times observed to consist of 5, 6, 7? or 8 clear glo- 

 bules, without being able to discern any film that held them together, or con- 

 tained them. When these animalcula or living atoms moved, they put forth 

 two little horns, continually moving. The space between these two horns was 

 flat, though the rest of the body was roundish, sharpening a little towards the 

 end, where they had a tail, near four times the length of the whole body, of 

 the thickness, by my microscope, of a spider's web ; at the end of which appeared 

 a globule of the size of one of those which made up the body. These little 

 creatures, if they chanced to light on the least filament or string, or other such 

 particle, were entangled therein, extending their body in a long round, and en- 

 deavouring to disentangle their tail. This motion of extension and contraction 

 continued a while; and I have seen several hundreds of these poor little crea- 

 tures, within the space of a graip of gross sand, lie fast clustered together in a 

 few filaments. 



