The Sargent Welch Scientific Company of Skokie, Illinois has been producing (for a very long time) those great old science charts that many of you may remember from the school rooms of your past.

This Guinea Pig (captioned in Latin) comes from a strikingly beautiful black & white chart entitled "Genetics," which documents all of the things that can happen re the offspring when a "Rough Black" Guinea Pig does what comes naturally with a "Smooth White."

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AS Colour 100% Cotton Baby Onesie. Made from super soft 190gsm cotton with a superfine cotton rib. Constructed with tonal shoulder domes, shoulder to shoulder tape for durability and preshrunk to minimise any shrinkage

Size	Body Width (cm)	Body Length (cm)
0 - 3M	19	36
3 - 6M	20.5	39
6 - 12M	22	42
12 - 18M	23.5	45
18 - 24M	25	48

 

How to Measure:

• Lay an existing t-shirt flat.
• Body Width: Measure 3cm below armpit, from one side to the other.
• Body Length: Measure from the top of the shoulder to the bottom of the t-shirt.