PLATE VII 



ditld materia pauallumtempoTiiJieterAt^ in ea, ohjtrvabsrjtur tri- 

 idteraiesfi^ur^ ^b utraque pirte tn acttieum defin'r:tis ^ quthuf- 

 dim icngitudfi minuttfiiwd' arena^ aliqu£ ^ltqt4ihtH urn wajores^ 

 A f^ l\ % «^ fij* A. Frateredy adeo ntttd£ &o ptUucida^ acfi 



" i| V ^' cr\fiallin£ juijjent. 





SPERMINE PHOSPHATE 



Crystals in human semen as seen (from top to bottom) by Leeuwenhoek 

 (1677), Fuerbringer (1881) and Poehl (1898). 



