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New York AGRICULTURAL Experiment Station. 155 
Per Cent oF Toran Far In Dirrerent SizeEp GLOBULES. 












| eeSs_ | 1to2 | atos, | sto4 | 4tos. | sto. 
FELSGYA Ware ccithe wes - ch shoe ME) 11.3 | 26.1> | Smee Vener 0 
SPUCTUSCYE eta. se. ef 11.3}, 38352 | 2 ae emirate 
MEVONIA Puech CL cas oo 5 123.0. | 42.5 | (Sas eae 
American Holderness..... tO} 247.) 40.1 | QC ieee wees 
PROVES DITO ere tele ss 6 Fin 5 ws os fo. | 8420 | 41.6) | DSi Gos min eee 
Holstein-Friesians . ..... 13) 88.3) | 50:1 i) SDB y iis ctaien neti cee 
BMMEDAD Giaeyiald ¢ sta) «isa e s2. | 23.8-| 38.9) 925) SigeOes ids 

Tur ACTIVITY OF THE PHYSIOLOGICAL PROCESSES. 




In the secretion of milk we have a ready and comparatively 
accurate means by which to measure the rapidity of physiological 
processes. 
We have seen that several cows under experiment secreted night 
and day an average of seven-tenths of a pound of milk each hour, 
or nearly 19.6 cubic inches of milk. As an average of over 150 
determinations with the milk of the fifteen animals of the six 
breeds, we learn that there were in one-ten-thousandth of a cubic 
millimeter of milk an average of 152 fat globules, and a little caleu- 
lation will show that by each of these animals there were secreted 
each second an average of nearly 136,000,000 globules of fat. 
Dr. Sturtevant, in the Trans. New York State Agricultural 
Society, 1872-6, page 98; mentions a specimen of Bovista gigan- 
ticus (gigantic puff-ball) as growing in a single night, in damp 
weather, from the size of a mere point to that of an enormous 
gourd; and from an approximate calculation, it was found that in 
this plant not less than 20,000 new cells were formed every 
minute; and Kieser calculated that the tissue of some fungi 
augmented at the rate of 60,000 cells a minute. But wonderful as 
this activity of cell action in the vegetable world, it would appear — 
almost sluggish by comparison with what we find true concerning 
the secretion of the fat globules in milk. 
EFFECT OF SIZE OF GLOBULES UPON CREAMING. 
In the creaming at the Station the milk is generally set in cans 
eighteen inches deep, and the skimming is done in the morning. 
This results, of course, in allowing one-half the milk to stand 
