Duration and Frequency of Heat in 
Normal Farm Animals 
If Not Impregnated 
In Heat for Heat Will Occur in 
Marées¥ir-2 sora Sto 7 3 to 6 weeks 
COWS? meee eae Zito 3 to 4 weeks 
Ewes *.* ers ee, 25to-3 17 to 28 days 
SOWs#ignt8 are 2 to 4 21 days 
Average Period of Gestation 

4814 wks. or 340 days | Extremes, 307-412 days 
4014 wks. or 283 days | Extremes, 240-311 days 
Ewe 22 wks. or 150 days | Extremes, 146-157 days 
Sow 16 wks. or 114 days | Extremes, 109-120 days 
POSTAL RATES 
Always consult your Postmaster when in doubt, 
FIRST CLASS — Sealed letters for local delivery, per 
OCT C Carrere cence rata scent ene soresn tines sousadeoh stars soeee tk teteeceed hones sidees 3c 
Sealed letters for delivery outside your city or town, 
DOILLOUTI COR teecrmer eres eet ota Sere ik She sph ox Foci casts aadendbottves 3c 
IRevistereqmictters mip mtOe peValUGor..cscerae coke ce 20c 
Increased rates on high values. 
SECOND CLASS—Newspapers and publications when 
mailed by private party, per 2 OUNCES.............ccsssesesseeees Ic 
THIRD CLASS—Unsealed printed matter, without per- 
sonal message, weighing less than 8 ounces, per 2 
OUNCES Sererrin eer Ne NE PEE: cad Nii ecabaicsvessestiosons 1%4c 
See Postmaster for rates and requirements on quantities. 
POST CARDS—Private mailing cards and government 
DOStalS Seach pe cccee peter tee e cae seve cd ckehieuedasuese Susser ees Ic 
SPECIAL DELIVER Y—First Class, not over 2 pounds..13c 
Othersthansfirst:classenoteover 7 pounds: ........;..0 L2G 
Increased rates for any packages over 2 lbs. 
FOURTH CLASS (PARCEL POST)—Unsealed books 
or material not in first or second class, weighing over 
eight ounces and not over 70 pounds. 
PrAtR Chae Ooch R ALES 

ZONES 
1-2 3 4 5 6 7 8 
Upto 150to 300t6 600to 1,000 to 1,400 to Over 
Weight Local 150 300 600 1,000 1,400 1,800 1,800 
Lbs. miles miles miles miles miles miles miles 


1 $0.08 $0.09 $0.10 $0.11 $0.12 $0.13 $0.15 $0.16 


2 .09 Hl ele ails 18 .20 24 ra | 
3 .09 12 14 18 ao 2) Se: 38 
4 10 -13 .16 Lis 28 34 42 49 
5) .10 14 18 20 34 41 eZ 61 
6 ait 5 .20 29 39 48 61 iz, 
7 pil 16 22 YA 44 96 70 83 
8 oL2 nly 24 36 90 .63 79 95 
9 12 18 .26 .39 .56 70 89 1.06 
10 alg .19 TAs .43 61 ahi 98 ei ly, 
AIR MAIL—Mail of any kind may be sent by air, under 
the same conditions as ordinary mail, but at one 
Pate moti Ve De lROUN CO are atten on ee seksi echoes es a 8c 
Air mail to men & women in the service, overseas, 14 0z., 6c 
15 
